That's an interesting perspective, but my husband feels that her behavior is unacceptable and has been like this since she was little (which was after her parents broke up). I think any "acting out" about her parents' divorce would have occurred at that time, not now.
How do you explain that she is snotty and disrespectful towards her own dad? He is now the one helping her with homework and she still has the same issue with whining and crying that he's not helping her.
He sent her to her room two weeks ago for talking back to him and she had a screaming, crying, throwing, door-slamming fit. If her problem is that she senses that I don't like her, why is she treating her own father that way?