agree Bibbity anxiety can be crippling ,she needs to seek help for it ,also is her home life secure ,do her parents praise her and tell her how capable she is.I have a friend who constantly told her son he was clumsy and guess what he was clumsy ,once she stopped saying it and offered constructive cricism he stopped being clumsy,he was only little though so a teen might need a different approach.But trusting her to do things for hersellf would be a help.I was a shy child ,used to hide behind the sofa or under a table when my parents friends came round,my mum helped me by asking me to hand round sandwiches or talk to one of them about the book I was reading( I was always buried in abook) it really helped and once I started working I found socialising much easier.Hope this wee girl gets the help she needs ,anxiety is an awful thing to live with