Should I confront my fiance over text messages I found?

[Jim Jones]

I guarantee this thread isn't going to be about what the thread title might have led you to think it's about. Sorry about that...

Anyway -- was reading text messages on my fiance's cell phone (Yes, I do that, I'm a privacy invader...but past relationships have led me to be a little paranoid).

I read texts between her and her sister and mom, basically trashing my family, which is who we're spending Christmas Eve with. It wasn't just like your usual, "not really looking forward to going to the in-laws", but it was actually pretty vicious stuff. She was trashing my mom's cooking, basically saying she doesn't like my mom at all (my family has been AMAZING to her)..complaining that all we do is "sit around and talk with a sports game on the TV), trashing my parents house, my sister and her "annoying kid". It was really nasty stuff and a side of her I haven't really seen before.

Question is -- do I confront her? This is all that's gonna be on my mind tomorrow, but confronting her means I have to admit to reading her text messages. I don't know how I can move forward knowing she's been talking all this shit about my family though.