I don't know, it sounds more like you open up old wounds from something that happened to her in her past. Someone may have hurt her in a sexual way, and what you did triggered those memories. Now those memories are fresh at the surface, and you're her source of fear right now because of that.

I get the way she was when you first got together didn't bother you. And over time after everyone throwing it in your face, things get old and you want them to change...

There's not enough info here to know exactly what went down. But if you are a good guy, and care about her, I suggest sitting down and talking to her.

Although I wouldn't mention you think she was sexually assaulted or anything, is she hasn't brought that up. But let her know you would never hurt her, if you truly wouldn't.

Whatever the outcome, I hope she's okay and gets over this.