AITA for planning a trip during my SIL’s due date??

A 32-year-old woman is caught in a family tug-of-war: her mom surprised her with a dream mother-daughter trip to London in April—her first ever with Mom, timed for her birthday. The only hitch? It falls during the week her sister-in-law is due with her first baby. The two women have never been close—SIL is openly unfriendly and only tolerates her because of her brother (the husband).

When she excitedly told her husband, he shut it down hard: she “can’t go” because family should be there for the birth, pointing out that SIL visited them in the hospital after their own child was born last year. She fired back that SIL doesn’t even like her, hospital visits for newborns are short anyway, and she can meet the baby when she returns (they all live in the same city). He called her rude and unreasonable; she thinks it’s a weak excuse to derail a special, non-refundable gift. The online community overwhelmingly backed her up, telling her to go enjoy the trip and questioning her husband’s priorities.

‘AITA for planning a trip during my SIL’s due date??’

The tension stems from a strained relationship with SIL:

When she shared the exciting news, the reaction was unexpected:

This conflict highlights a common family dynamic: differing expectations around “family duty” during major life events like births. The husband views attendance (or availability) as a non-negotiable show of support, especially since SIL showed up for their child’s birth. For him, it’s about reciprocity and being present for his sister. But the wife sees it differently—SIL’s lack of warmth toward her means no real emotional bond, so her physical presence isn’t meaningful or expected.

Due dates are notoriously unreliable (babies arrive anywhere from 37–42 weeks, often early or late), and modern hospital births prioritize privacy for the new parents and baby bonding. Crowds in labor/delivery aren’t welcomed by most women, and early postpartum visits are brief to avoid germ exposure to newborns. Canceling a rare, sentimental mother-daughter trip for a low-odds chance of overlapping exactly with birth feels disproportionate, especially with non-refundable plans.

Dr. John Gottman, a leading relationship researcher, emphasizes that healthy partnerships involve “turning toward” bids for connection (like sharing excitement about a trip) rather than shutting them down. Here, the husband’s immediate veto dismissed her joy and autonomy, potentially breeding resentment. Family-of-origin loyalty can create blind spots—husbands sometimes prioritize siblings over spouses if unresolved patterns exist.

Practical advice: Have a calm conversation framing it as “I want to support your family, but this trip is a once-in-a-lifetime gift from my mom. Let’s plan how you’ll handle things if the baby comes early.” Suggest FaceTiming from London, bringing a special London gift for the baby, and visiting immediately upon return. If he insists on veto power, explore why—perhaps guilt over SIL’s feelings or fear of conflict with his family. Couples counseling can help balance in-law obligations with marital partnership. Ultimately, she isn’t obligated to rearrange her life around someone who doesn’t value her presence.

Here’s the feedback from the Reddit community:

The community overwhelmingly supported the wife, calling her NTA and urging her to enjoy the trip without guilt.

Most dismissed the due-date conflict as overblown and questioned the husband’s motives:

This situation shows how family expectations can clash with personal joy—especially when one spouse feels pulled toward their sibling while the other prioritizes a rare bonding opportunity with their own parent. Due dates aren’t guarantees, hospital births aren’t social events, and non-refundable plans deserve respect. The community agrees: go enjoy London with your mom.

Have you ever had to choose between family obligations and a special personal trip? How did you handle the pressure? Share below—your story might help someone else facing the same dilemma.