AITA for not allowing my sister to stay with me for months, while she’s having her first child?

A woman and her husband, by choice not to have children, host their narcissistic sister abroad for over three months while she freezes her eggs. Now, the sister is planning to undergo in vitro fertilization (IVF) abroad to obtain a local passport for the baby, expecting to stay through the late stages of pregnancy, delivery, and the first weeks after birth. The couple fears invasion – invasion of privacy, frequent hospital visits, and forced caregiving between stressful jobs. Family relationships are strained when she receives free accommodation.

What complicates the story is that the sister’s single parenting due to an affair clashes with their right to privacy. Their attempts to have a child simultaneously highlight their different life paths, but her “convenience” ignores their limits. The knot lies in her history of selfish demands, which ultimately forces the host to say no.

‘AITA for not allowing my sister to stay with me for months, while she’s having her first child?’

Distant sisters rarely connect beyond holidays, clashing in personality.

My sister and I are not close. We are just very different people, she's self-centered and narcissistic, and just generally hard work to be around. She also lives overseas so...

An affair leads to fertility efforts requiring travel.

So my sister has been having an affair with a married man for the last 2 years, and is now trying to have her first child (either with him, or...

Because it's not possible to get the necessary procedures done in the country where she lives, she has been coming to stay with me and my husband for extended periods...

In total, she stayed in our house for just over 3 months in the past year. We allowed it because we want to be supportive of her having a child,...

We both have stressful jobs with long hours, and it's difficult when you just want to come home and unwind / relax in privacy, but instead need to entertain a...

IVF shifts to birthing locally for passport perks.

Now, the egg freezing was just a backup option, and this year she is finally going through with IVF to have her child. I always assumed she would do this...

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but she has decided to have the child in my country instead as it will be "more convenient" and she "wants them to have a (country where I live) passport".

Months with a newborn looms as intolerable.

Family is important to me, but the idea of her staying with us for several months while in the last stages of pregnancy, and then having a newborn in our...

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My husband and I are also childfree by choice, so it would be very disruptive for our personal lives. So - AITA if I tell my sister she can't live...

Rights clash with autonomy when single parents expect free, indefinite housing from reluctant relatives. The sister’s plans create chaos before the birth, birth emergencies, and post-partum needs for a childless family, leading to the risk of resentment and marital tension. Parties are divided: those who support family obligations see refusal as cold, while those who support boundaries prioritize the peace of the host—especially when previous generosity is exploited. Society increasingly normalizes saying no to overreaching boundaries in adult sibling relationships.

Logistically, late pregnancy requires close proximity to care, but not at the expense of others; hotels or rental homes exist for a reason. Parallel life choices—childless or single motherhood—demand mutual respect.

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“Hosting extended family during major transitions requires clear agreements; without them, goodwill erodes into obligation,” explains family therapist Dr. Laura Markham (2023). The company refused to protect the couple’s lifestyle, redirecting the sister to paid options or a support network at home.

Here’s what people had to say to OP:

Most users championed the no, citing hotels and past over-accommodation as proof of fairness.

jeberargonaut − Nta. Hotels, Airbnb or rental property exists. You have already been more than accomodating.

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longtimelondoner − Nope, NTA and she is for expecting you will.

Gopackgo6 − NTA at all. She is taking advantage of you and admitted it’s for convenience. If she’s that worried about having it in your country, she’s welcome to stay...

nolimbs − NTA she’s taking advantage of you’re kindness

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rainfal − NTA - what's stopping her from claiming your home as her residence and refusing to leave if you do? Nor is she offering to pay rent or help...

A couple urged caution on risks, balancing empathy with practical shutdowns.

GuyWithGun − NTA. The last few months of pregnancy and the first few after birth are the most stressful for EVERYBODY. You and your husband are child free by choice,...

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Even if everything goes perfectly, she is going to need a lot of help and attention and care those last few weeks of pregnancy. The last couple weeks I'm sure...

Late? You never know! Do you have the ability to just drop everything at work? Then comes the hospital where theoretically you and your husband will be alone for a...

and I would guess she'll probably expect you to assist with the baby at all hours of the day while she recovers. Even if she gets better earlier the baby...

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Now she's on bed rest and you have to wait on her hand and foot 24/7 until the baby comes. Or the baby has colic and is crying for hours...

These things can be a huge strain on marriages for two people that are in love and dedicated to each other and are deeply connected to the child. I'm not...

Taking in a pregnant relative and a newborn is a HUGE commitment and responsibility (and imposition on her part). It will definitely NOT be a, "Can I stay for a...

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YeahAskingForAFriend − NTA. She's expecting a hell of a lot here, and there is absolutely no way you will NOT end up having to do at least partial care for...

and I think it's completely fair to say you're not up to that. If she's a single mother by choice, she needs to build up her support network at home...

Witty voices added levity with entitlement jabs and rule reminders.

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SuperSpyChase − NTA. I wouldn't put up with three months of living with a family member I couldn't get along with; forget adding several more months and potentially a baby!

You should straight up tell her no this will not be allowed. It sounds like because you've put up with her behavior before she just expects you to accommodate her...

People can develop a real sense of entitlement. Even if you were close and did get along, though, this would be far more support than most family members could reasonably...

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Toastwaffler − NTA, if she has the money to waste on fertility treatments she has the money to spend on living arangements

wmnoe − NTA - your house your rules

The couple’s firm no honors their childfree choice after prior generosity, while the sister’s convenience play ignores burdens. No villains emerge beyond mismatched expectations, but redirection to hotels preserves ties without sacrifice. Family support has limits.

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How do you draw lines with demanding siblings? Would you offer short visits instead? Share your boundary wins—Airbnb links or firm nos?

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