My mum does not give a crap about me?

It makes me upset becoz my mum acts like im her worst enemy shes been doing it for the longest. When she looks at me in my eyes its like she wished that i was never her daughter. The only time she ever wanted me around was when she was lonely and she used me up like a friend and she found a new boyfriend who is younger then my own brother! Hes a leech and i KNOW hes with her for the money, and the family business. Now she is fighting in court against my father for the business that they built together and she is telling the court that i never lived with her and i lived with my nanna when i was a baby and she is trying to say that she had no responsibilites for me she burn all of my dads paper work and proof that he even work apart of the family business and now she is trying to act like we where not even apart of her life. Its so sad because my dad grew up 2 of her kids that where not his and helped her for over 20 years and had me as a daughter and my mum does not give any shits about me and when i call her up she just screams at me and tells me off. She even get jelouse because she thinks her boyfriend is looking at me so she blames it on me because i was wearing a skirt and she thought he was looking at my legs so she told me i look like a sl*ut and i swere i remeber she told me once she wanted that skirt. She makes me realy upset and i always cry!!! What is wrong with her? Will she ever grow out of it is this normal? She is 47 and one day on the phone she told me how can your boyfriend have patience for you? and im like why?? and she said i cant even have patience for you because you this and that... Why can't she just be happy for me? I moved countrys and i live with my fiance and when i call her she just hangs up on me and starts swering at me.