nothing you can do about it, just dont tell her yours if she wont tell you hers, she probably wants her privacy
she probably just has a lot of confessions she doesn't want to have public. I do the same type of thing. I keep this site and the other social sites totally seperate. I'd just respect it and maybe she will eventually open up.
I would not worry that much about it. as long as you both are open when not online. She will eventually share with you her EP experiences.