Actually, the flowers and the chocolate would be something she doesn't deserve, in my opinion. That's for AFTER the sex.
I just think you should bring it up again. There's obviously something wrong with her or this situation wouldn't be what it is, and bringing it up at all was probably a Herculean effort for her. I think you should take it the rest of the way, tell her you haven't forgotten what she said and tell her you want to go to a counselor together as soon as possible. The fact that you're just letting it go is telling her it's not really important to you after all.