AITAH for refusing to babysit again after sis didn’t pick her kid up on time?

The clock ticks past midnight in a cramped apartment, where an 18-year-old clutches her phone, heart racing, as her sister’s newborn wails. She agreed to babysit for a few hours to help her single-mother sister, expecting her back by lunch. But hours turned into four agonizing days, with no word, no answers—just silence. Alone with a toddler and a newborn, she spiraled into panic, fearing the worst, only to learn her sister was off partying, oblivious to her distress.

This isn’t just about a broken promise; it’s a raw clash of duty, betrayal, and self-preservation. The young woman’s guilt battles her anger as her sister demands more help, backed by their mother’s pleas for patience. Readers will feel the weight of her fear and the sting of dismissal, diving into a story of family strain and the courage to say no.

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‘AITAH for refusing to babysit again after sis didn’t pick her kid up on time?’

At the beginning of this week I(18F) babysat my sister's (26) two kids (2 and newborn). She is a single mother and went out to meet with friends to have lunch. She promised me to be back after few hours. I didn't want to babysit since it would cost me precious exam prep time and I was anxious because of the newborn and my zero experience but she begged and cried so much I did it.

She didn't show up until yesterday in the evening, and I wasn't able to reach her during the four days and called even hospitals if they found a female body or what because I seriously thought something major happened.

Turns out she was partying and lost track of time and I should just stay calm and don't cause so much drama because everything is good and nothing bad happened to the kids. She didn't see the fact that I was shaking and had panic attacks.

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After she told me to shut the ef up because she tried to sleep I just packed my stuff and now I'm in the train going to my place. When I left she called me, and said how dare I leave because I promised to take care of the 2 year old when she goes to the hospital for the appointment on Saturday morning with the newborn

And that I promised that before she partied so no matter what I had to keep my word. I feel a little guilty but also I'm afraid she will continue like that and I felt I need to protect myself. My mom and her think I'm the AH. My mum partly understands but said I should have been patient one more day until after the appointment.

Four days of unexplained absence while leaving two young children with an unprepared teenager is beyond irresponsible—it’s neglectful. The sister’s dismissal of her younger sibling’s panic, coupled with demands for more babysitting, reveals a troubling lack of accountability. The 18-year-old’s decision to walk away is a stand for her mental health and a refusal to enable reckless behavior.

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Dr. Carla Marie Manly, a clinical psychologist, notes in Psychology Today (https://www.psychologytoday.com), “Setting boundaries with family is crucial when their actions harm your well-being.” The sister’s prolonged absence and flippant attitude mirror patterns of entitlement, placing unfair burdens on her younger sibling. The mother’s push for patience risks enabling this cycle, ignoring the teen’s distress and academic pressures.

A 2021 study in Child Welfare (https://www.cwla.org) highlights that parental neglect, like leaving children without communication, can destabilize caregivers and harm family trust. The sister’s behavior raises red flags about her parenting reliability, as Redditors noted with calls for CPS involvement. Dr. Manly advises, “Protect your peace by limiting contact with those who disregard your limits.” The teen should focus on her exams and seek supportive relationships, perhaps with friends or mentors, to rebuild confidence.

Here’s what Redditors had to say:

The Reddit posse rolled in like a storm, slinging support and shade with equal gusto. It’s like a family reunion where everyone’s got your back and a few choice words for the absentee mom. Here’s the unfiltered scoop from the crowd:

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Suspicious-Donkey16 − NTA and how does your mom think this is ok?. If you babysit for her again expect this to happen.. She’s a mother and needs to be taking care of her children, not partying for days. And I don’t think she lost track of time for days, she had this planned from when she asked you

OpheliasKinks − Is that not like abandonment?? NTA I'd be calling cps honestly. Next time she wants to go party but doesn't have someone to watch the kids she unfortunately might just leave them home alone.

Otherwise-Plane8282 − What the f**k was she doing? How can you lose track of four days? Especially when they have small children. I would of called the police and CPS on her ass if she didn’t turn up after few hours of the agreed time and report her missing

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Historical-Hall-2246 − 4 days. Wow. You’re way too forgiving. I wouldnt have made it past the first half-day.

Zestyclose-Height-36 − NTA. Those are her kids. Do not ever agree to watch them again. Your mom can watch them if she thinks it easy. Really you should have reported her abandoning them at 6 pm the first day. Those kids are in danger if she thinks she can party for four days while dumping them on you.

Dealerzchoice − Should’ve called the cops and reported her missing

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Bearlythegrizzlybear − NTA. Don't come back and you should say to your sister that your mother agreed to come and do it. Your family need to understand that you could have called social services or police (after one day I would have).

Even if she was just partying, for her own safety you should have done it, because you didn't know where she was. . Don't accept to be put in this situation again with anyone. Please concentrate in your exam prep and ignore both of them. Your mother just doesn't want to do it herself. 

Accomplished-Emu-591 − NTA. A four day bender is not 'everything is good.' Ignoring your need to prep for exams is pretty damn selfish. She is a user and your mother is an enabler. You will be far better off to be NC with both and just concentrate on your schooling.

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Own_Cap_9781 − NTA for being angry at her, YTA for not calling to police to at least report her for negligence. “She was too busy doing c**aine, forgot her kids”

TheCy_Guy − If you ever agree to watch them again you will find yourself in trouble one way or another because of her behavior not least failing to bring in CS. Stay well away from her and your enabling mother and if they raise the topic tell them your refusal is not a conversation. Stay strong and good luck with your exams

These Redditors rallied behind the teen, slamming her sister’s neglect and urging her to hold firm. Some saw the mother’s stance as enabling; others flagged the situation as a CPS matter. But do their fiery takes capture the full story, or are they fueling the drama?

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This heart-wrenching saga shows that family ties don’t justify exploitation. The young woman’s choice to protect herself over enabling her sister’s recklessness is a powerful act of self-respect. It’s a wake-up call to prioritize your well-being, even when guilt and family pressure loom large. Have you ever had to set a hard boundary with a loved one? What would you do in her place? Share your stories below.

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