WIBTA if I lock myself in my room until I leave for school next week because I’m sick of my family using my sisters BPD as an excuse for everything?

In a cozy suburban home, the hum of an 18-year-old’s college preparations is drowned out by a familiar family uproar. A morning spat, sparked by a sister’s outburst over a yoga class and an absurd soda-related accusation, has left the teen weary. Diagnosed with BPD and Histrionic Personality Disorder, the sister’s volatility casts a shadow over the household, and the teen, on the cusp of leaving for college, feels suffocated by the constant need to tiptoe around her.

With scholarships secured and a grandmother’s support in their pocket, the teen’s heart is set on Thursday’s departure—a gateway to independence. The sting of being blamed for their sister’s actions, coupled with their parents’ pleas for “family unity,” has pushed them to consider hiding in their room until escape. It’s a quiet act of defiance, born from years of feeling unheard, as they dream of a fresh start far from the chaos.

‘WIBTA if I lock myself in my room until I leave for school next week because I’m sick of my family using my sisters BPD as an excuse for everything?’

For background, I am 18 and soon to be a college freshman. My sister is 25 and although I could type for days how her life has failed to launch and why, I'll just leave it at she lives at home. She is diagnosed with BPD and it's 'cousin' Histrionic Personality Disorder and has been as long as I can remember.

I am supposed to for leave school out of state on Thursday and after this morning, I really don't ever want to come back. I have scholarships, I can work to make room and board and my grandmother said I could 'borrow' money from her (she really means give because she'd never let me pay her back).

I guess since that is my plan my question is WIBTA if I just stay in my room and avoid my family until I leave on Thursday? The incident this morning: I enjoy Bikram yoga and every Sunday there's an early bird class that starts at 8. I was getting ready to go and my sister came in and told me 'Yoga is b**lshit.'

I told her that I didn't want to argue with her and her opinion wasn't going to stop me from going. She then said 'if you want to be a ignorant piece of s**t, fine go.' I told her to please just don't talk to me and let me go. She then said 'you started this.'

After dealing with this crap for all my life I should have known better but I asked 'how did I start this Angie?' She said that on Friday I had asked my dad to bring me Wendy's home and I should know she can't eat Wendy's because she's diabetic and even the smallest amount of fast food in the house is 'soda trigger' for her

and she had 3L of coke yesterday and it was my fault. I asked her why she's not mad at my dad for getting me the food. She said that's not the point and threw and empty L bottle of coke at me. I tried to leave but my mom heard the commotion and tried to pull this crap 'you're sisters, we're going to work this out' and made me sit down and miss my yoga class.

I was so disgusted because while they did tell my sister that I can't be held responsible for her drinking 3L of coke, they kept repeating to me that I need to recognize that my sister has BPD and we as a family need to love and support her even though she can be hurtful sometimes.

I faked an apology just to get it over with, but I've been hiding out in my room all day long and unless it's to get food or go to the bathroom or go to my friends goodbye party on Tuesday, I want to stay here. I don't care if I say goodbye to my mom or dad, I don't care if I ever see my sister again. I just want to stay in my room.. WIBTA if I do this?

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Family life can feel like a tightrope walk when mental health challenges like BPD enter the mix. The teen’s clash with their sister, Angie, over a yoga class and a bizarre soda related accusation reveals a household strained by imbalance. Angie’s BPD and Histrionic Personality Disorder drive her intense reactions, but as psychologist Dr. Ramani Durvasula explains, “Mental illness explains behavior, but it doesn’t excuse hurting others” . The teen’s frustration stems from being held accountable for Angie’s actions, like her 3L soda binge, which highlights a classic BPD trait: externalizing blame.

The parents’ approach—urging the teen to “work it out” while excusing Angie’s outburst—tilts the family dynamic heavily in one direction. This enabling, though rooted in love, risks perpetuating Angie’s unhealthy coping mechanisms. A 2020 Frontiers in Psychiatry study notes that family enabling can exacerbate BPD symptoms, delaying recovery . The teen’s desire to retreat reflects a need for self-preservation, as their feelings are consistently sidelined.

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Dr. Durvasula’s insight underscores the importance of boundaries: “You can support someone with BPD without absorbing their chaos.” For the teen, setting boundaries might mean calmly disengaging from conflicts and prioritizing self-care, like attending their goodbye party. Writing a letter to their parents before leaving could express their feelings without sparking confrontation, fostering clarity while maintaining distance.

To navigate such dynamics, the teen could explore strategies like the “grey rock method,” where neutral responses defuse conflict without escalation . Engaging in mindfulness or journaling could also help process emotions before college. For families facing similar challenges, professional guidance, like family therapy, can balance support and accountability, ensuring no one’s needs are erased.

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Here’s the comments of Reddit users:

Reddit’s community rallies behind the teen with empathy and sharp wit, seeing the family’s enabling as a trap. They encourage the teen to protect their mental health and set boundaries before college.

xxxJxshy − NTA, honestly sounds really frustrating especially with the way your parents deal with all of that imo it would be justified

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rogeliana − NTA but don't make a big production of it. If you want to be super quiet and avoid family as much as you can, go for it. Don't engage with your sister because no matter what you do, you will 'lose' because it's all about HER. Kiss your parents and say a nice goodbye to them. You are going on to bigger and better things; you have so much to look forward to! I wish you all the best.

[Reddit User] − NTA. I used to have unmanaged bpd like your sister and it’s very obvious you should get out. She needs copious amounts of therapy and possibly medication and to be held accountable. Your parents are enabling her. See if you can stay with a friend.

TentedCrib4 − As someone with BPD, yeah, you're NTA here. I imagine your sister's deliberately picking fights with you because it gets her attention from your parents and makes her feel validated, but that's a hugely unhealthy coping mechanism and it's her responsibility to try to work on that.

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And your parents seem to be enabling her by implying she can basically do whatever she wants because of her personality disorders and that she can't do anything to modify or improve her behaviours.

And the worst part is that they're invalidating you by implying that your feelings don't matter as much as hers because you don't have BPD, which is just cruel. I don't blame you for wanting to avoid them.

shireengul − SOOOOOOO not the a**hole (NTA). I’m a working adult, spent all last year overseas, and the first few weeks back (around Christmas) went to see my parents on the other side of the country (I’m in the US). Only took my mother four days to start being a major jerk to me, screaming and insulting me,

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so I packed up my stuff and told her I was leaving to stay with a friend in town. My dad angrily texted me telling me how I hurt her feelings and if I really loved her, I would forgive her. I was finally like “nope. I’m done dealing with this. No more”.

I haven’t seen them since Christmas and have only talked to them a handful of times. Don’t plan on seeing them again this year and am spending Christmas with my boyfriend overseas. You control your own MH (mental health).

Unless they’re all willing to apologize and stop holding you accountable for your sister, I personally see no reason why you should keep them in your life. And since money is not a huge issue, why oh why would you keep playing their toxic game?

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c-s-n-l − NTA - sorry kiddo, sounds like it sucks. I'm not nearly smart enough to have figured this one out, but someone else recently posted about 'the grey rock method' - google it, would help you to keep your sanity until Thursday.

itsadogslife71 − NTA. NTA. NTA. Mom: OP, it doesn’t matter that Angie tried to m**der death kill you. You just need to understand cause we are faaaaammmmily and she has a mental illness so you have to suck it up that you now have 29 stitches in your stomach and lost your right eye.. Angie, that was bad that you stabbed your sister.. Bad.

Don’t do that.. Everything all better now? Ugh,how far is too far? Don’t try and find out. Hide from your parents and sister, lock your door and when you escape that hell hole Thursday, don’t ever look back.

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2DragonTats − NTA.. turn the tables on her. She, and your folks, are used to this behavior and getting away with it. Go about your days as normal, when she gets in your face again, just smile, say Oh, I'm sorry, I forgot that you have a mental problem that you are not taking care of. It's ok, I still Love You big sister! throw in a hug now n again.

It's only for a week. Believe me, this will get on her nerve FAST. You'll be throwing ripples in her smooth pond. Also, since it may be a while before you see your parents again..reassure them of your love, and keep letting them know that they are not doing any favors to your sister to Not push her to therapy of some kind.

Also, that you are not going to do what they do, when they are too old to keep doing everything for her and excusing her bad actions away. I did this to my family, regarding an older brother. (he passed 3 yrs ago)

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Prysorra2 − made me sit down and miss my yoga class.. You are 18. It's beyond time to lay down the f**king law.

gomakerealfriends − NTA - mental illness is an EXPLANATION not an EXCUSE

As the teen counts down to college, their room becomes a sanctuary from a family storm. It’s a subtle stand for self-preservation, proving love doesn’t mean enduring chaos. How do you handle family tensions when mental health shifts the balance? Share your stories below—let’s get the conversation going!

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