yeah, some people would be like "DUMP HER MAN SHES NOT WORTH IT" but the way you talk about her, and your tone, sounds like you really care about her. (especially after 2 years) I agree with Weedy, just talk to her and discuss the issues shes having. It sounds like its pretty much insecurity, so tell her that you love her and it wont change.(which i'm sure youre already doing..) But make sure to do it during your chat. Ask her if anything else is bothering her and if she wants to talk about it. Listen to her. Even if she keeps repeating herself, listen to her carefully. If she still gets mad and flips out, or has a tantrum, i'd heavily suggest a "break."