lack of hygiene tends to happen with stress and/or depression. I agree with smmath... maybe seeing a therapist would be a good idea. She may just have a online friends. I know that may not be what a parent exactly wants to hear, but as long as she has some sort of community to work her problems out with, thats a plus. I was the same way when I was 13... I isolated myself really badly, but over the past 5 years I have really come out of my shell. She'll come around... be patient, but always reassure her that you love her and care about her.