I'm getting married abroad next year. We originally wanted this to be during the May/June half term, but unfortunately these dates were already booked up for the ceremony venue we wanted. We have instead been offered a Saturday at the end of June.
My sister is a primary teacher, and one of my bridesmaids. She is refusing to ask for any time off, despite the fact that she could fly out on Friday and back on Sunday (short haul destination!) so would only need to ask for one day. She's suggested I either opt for the summer holidays or look for an alternative venue that is available in half term, if I want her to come. The reason she won't ask is because she doesn't think her head will approve it anyway, so "what's the point". I'm upset and angry, but don't know if I'm blinded by wedding emotion! Keen to avoid a family fall-out, AIBU?