DD(15) is on work experience so hasn't had contact with many people but a group of year 5's, the teachers and us. (DH, DS and I). She's tried texting her friends, and has seen that they received the message (iMessage) and eventually sees they have read them. They won't answer her though, and I don't know what to do. I think part of it may be the fact they're busy on their own placements, but I'm also worried they are ignoring her for no reason. What do i do?