I think that if she's 13 years old, and you can't talk to her and tell her that you are concerned about the perverts and that you want to see what she does in her pages, then the one that's being childish is you.
If you raised to be a good girl, she'd be, and you don't need to worry. If not, you're not going to make any difference now.
You shoud talk franckly with her about anything, you're her mother, for god's sake! You have to be able to talk with her about anything because you two must stick together. The best thing you can do is tell her that you're here, thet the site's about fiction and teach her how to protect herself against the perverts.
Also you should respect her decisions on whatever she does (for example, if she wants to make a Partner request for a Liberteen RP, you shoudn't horrorise yourself or say anything to her. You know the other people are kids too and that anything she does, she's experiencing something new) and stop stalking her. If you have a good communication, you won't need it.
Is better to build trust in you so she alone tells you anything than stalking her. You can't see everything she does, but you can earn the trust so she tells you everything she does.
