I am worried that my 12-year-old daughter is being cyber-bullied. She suffered a bit of bullying in her last year of primary school before transferring to high school last year, but I thought the change of school would've put an end to it. She's quite a quiet girl but recently she's seemed even more subdued. I've noticed text messages appearing on her mobile phone and she never seems keen to explain who these are from. I know she has a bebo page too, but I don't even know how to get on to it. I have asked her if anyone is being horrible to her and she just says no. What can I do to find out what's going on and help her?