I give blame to both sides, but she is deserving of most of the blame for not being humble. The moment her career took off, she started feeling herself way too much. She won that Oscar then she thought that she was untouchable. She refused to thank the person who gave her the opportunity to win the Oscar. I mean even if she didnt like him, she still should have acknowledged him for the opportunity.
Always remain humble and never feel like you made it because of you… Because best believe that somewhere down the line God sent someone into your life to bless you. And instead of humbling herself and apologizing, she let her foolish pride guide her.