I was thinking check-up to rule out any physical conditions would be a good idea as well. Just to be sure. And how is her eyesight? Kids can be weird about that stuff sometimes. Just make sure she is physically okay.
I almost hate to say the "B" word, but, are we sure she isn't being picked on or bullied at school? Sometims the effects of that come out sideways. Food for thought, that's all.