I need some advice on how to get one of my bridesmaids on board for the rehearsal/dinner. It's been kind of a head-ache with her, but I've been sure not to push her or let her know I'm annoyed, as I know everyone has lives outside of my wedding. She can't come to my shower (hosted by someone else, of course) or to the spa afternoon I'm treating my bridesmaids to before the rehearsal because she'll have too much homework (both are a month away). The only other wedding thing I bothered her with was getting a dress, which went fine. We correspond frequently about non-wedding stuff, so I don't think anything else is going on, but I don't know.
I guess I'm just upset because now she's telling me that the time for the rehearsal/dinner is a problem. I think 5:30pm (the night before the wedding) is appropriate to start everything, and I'm scheduling this around 25 people, so changing it just for her is really hard. What should I do?