It's basically the choice of her parents, and we can't change their minds... this is like waaaaay back in 2005 when That Announcer suddenly have to leave, as much as we wanted him to stay, he just couldn't, and was never to be seen again... some parents are protective of their kids' activity on the web, and sometimes it's justifiable; my mom used to be the same way, she had no idea I was here at MC for a number of years, and if she did, it may have been the same case, because she always felt that practically anyone on the internet at forums like this were probably all predators in disguise, it really hasn't been until at least within the last few years or so she began to realize that's not really always the case, and has been really more open-minded about the internet, and is aware that most (if not all) of my friends I've met through the internet, be it here at MC, or on YouTube and such.
In this case, as Figgie explained, her mother discovered reading a questionable fanfic on this forum, so again, when you think about it, her reasonings for no longer allowing her here is justifiable... she was only in her teens, right? Those are still impressionable years and ages, so yeah.
I'm not saying I don't want Figgie to come back either, I too am disappointed about these circumstances, however, I've been here a LOT longer than most of you young whipper-snappers, I'm one of the few older generation members still left here, and again, like I said, this has happened before, and there really isn't nothing we can do, because it was a parental decision.