Am I doing the right thing? My adult daughter is disrespectful and uses me.?

You sound like my mother, she is going through the same thing with my brother. My parents have been divorced for years and when me and my brother were younger we rarely ever saw are father until later on when we are older now and almost out of the house. Look I'm going to give you advice like I did my mother when my brother put her through a lot of troubles. What I said to my mother is NEVER doubt that you haven't been a good mother EVER, you did all that you could to raise us with what you had and whatever mistakes we make when were older even now do not reflect on you and the way you taught us. Like I said, if what you say is true in your question then you shouldn't have any doubts that you weren't a good mother. Your daughter is old enough to make her own decisions, so whatever she's does is not your fault. She's just sounds like she has a lot of hate for you for no reason except that you divorced her father because he was a lousy husband and it was over for you both for a long time. Don't worry you raised your daughter right and you should be proud of yourself for the time and energy you spent in molding and creating the person she is now. STOP letting her use you that's ridiculous for her calling you when she only needs something, next time just don't even answer her. Always remember you did your part more than her father did in raising your daughter now it's time for you to get back on your original course and worry about yourself and your new husband, it's time to let her go and let her move on with her life. Good Luck Momma!!!!