Each time, she get's angry and ends up going. I finally figured out that even more than not wanting to go, she does not want to be perceived by my family as not wanting to go.
You may be right. If so, that's a fight she's having with herself. Don't insert yourself into it.
Just make sure she knows that you *sincerely do* understand and empathize with why she might not want to, and assure her of your full support either way; no covert guilt trips.
"Show me a completely smooth operation and I'll show you someone who's covering mistakes. Real boats rock." -- Frank Herbert