[Micjones]

Do two things:
1. Say nothing.
2. Stop reading her text messages.

I'm not going to be condescending about you having done that. I've done both and I can tell you that confronting her will not end well. I also think it's ultimately unnecessary to continuing an otherwise happy relationship. We'd ALL be mortified by our partners' most private thoughts. Which is precisely why we shouldn't have access to them. So long as she's kind to your family, does it matter that she isn't fond of your mom's cooking? I mean, most people put on airs to go along with less than pleasant interactions with family.

She'll never get past you invading her privacy in the first place. You'll be angry that she won't set her feelings aside to address yours. The two of you will talk AT each other and your relationship may pay the ultimate price.

LET. IT. GO.