AITA for refusing to pay for my sister's therapy after she ruined my wedding?

Expert-Letterhead612 2629 comments

The user, a 29-year-old woman (OP), describes the events surrounding her wedding day, where her younger sister (25F), who was the maid of honor, behaved extremely poorly during the reception.

The sister became heavily intoxicated, caused a public scene by ranting about the OP being the "golden child," and even grabbed the microphone during the sp*eches to discuss her own personal struggles, leading to guests leaving early and ruining the special occasion.

Now, weeks later, the OP's parents are pressuring her to pay for her sister's therapy, citing the sister's mental health struggles and the OP's perceived success, leaving the OP questioning if she is wrong for refusing.

AITA for refusing to pay for my sister's therapy after she ruined my wedding?
‘AITA for refusing to pay for my sister's therapy after she ruined my wedding?’

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Users Wasted No Time Telling It Like It Is:

The crowd poured into the comments, bringing a blend of heated opinions, solid advice, and a few reality checks along the way.

The Original Poster is experiencing significant emotional distress, balancing feelings of justified anger over her ruined wedding against her parents' demands that she take financial responsibility for her sister's therapy.

Her desire for an apology and accountability clashes directly with her family's expectation that she leverage her financial position to support her sister due to perceived success.

The central conflict is whether a sibling is obligated to financially support another sibling's mental health treatment, especially when the sister caused significant public harm to the OP's major life event, or if the sister must first take accountability for her actions. Is the OP being cold-hearted by refusing to pay, or is this a matter of healthy boundary setting?