Have you spoken to the teacher to see what she is seeing at school? Or even the school counselor could check on her. If she is fine when you pick her up, then perhaps too much attention to this may be making matters worse. It would probably help if she could perhaps have a job to do each morning at school (i.e. help her teacher with a few chores, help the librarian or the counselor). Something to look forward to each morning. A bit of an ego boost, if you will.