my step daughter

well she is 13 & your 16 what are some ideas you can give me (step mom)to help us get along better? well she goes with her real mother every other friday & on sundays her dad & I pick her & her brother up, he is 15. Well what she does is she is rude to me a few days before going to her mothers & the day she gets back & it doesnot seem to get better.All the things she has told me when she was younger, she now said in a rude way, “ why would I want to tell you any of that stuff for” or “ I never said anything like that to you”. I here its the teenage ways of growing up, BUT she is a brat, rude , lies , & stills from me & then trys to say it was her so called friend who is rotten to her. She use’s me for money & then doesn’t want anything to do with me after she would get something from me or if I don’t do any thing for her or with her she’s a real Bit*h , or she don’t want to do something I ask her to do after she already said ok in the first place. She is totally messed up cause of what her real mother is telling her is part of it & the rest is the lies she is telling her mother thats not true thats causing the problems here. What do you think can you help me out since your a teen .