Perplexed, frustrated and left high and dry in Chile

My 13-year-old daughter's account was disabled without warning, without indicating exactly what the problem was. Of course we are both perplexed--I carefully supervise her sessions. She had a session in a cyber cafe a few days before it was disabled, but that is the only reason we can imagine it was disabled. Of course, she spent lots of time building her friends--we live abroad and she uses it to keep in touch with friends and relatives all over the United States--and so is devastated to have this virtual network pulled out from under her from one moment to the other. Is there anything we can do to reactivate her account????
Thanks for any help!
Mom in Chile