How do I change my attitude?

I hate the hear this. Poor kid is just following her example. It's very big of you to see that. If you are the one that buys everything for her you need to point that out, let her know you have been providing and that your not gunna do it anymore unless she starts respecting you. Bet that works!! Props to you for everything you are juggling right now! Sounds like you really got it going on!