How would one convince an adolescent girl to cease her infatuation with oneself?

I thought her feelings were rather neutral at first, but some things had happened and now it's plainly obvious that I mean quite a lot to her. I once had a healthy fondness for her, but I realize now that my actions seem to have resulted in an unintended consequence and now I can't go more than a day or two without hearing from her with love letters sent via her parents and lawyers.