And not only does she not want to include you in her life, she wants you to pay for her new life, her escapades into affairs with other men, etc.
Please if you listen to one thing I say, DO NOT PAY FOR ANYTHING!
Stop doing things she asks for. Be polite or better yet, be civil & indifferent - don't show any emotion, just say NO.
She is realizing the power she has over you, and she is enjoying this power, they say that power corrupts and to some degree it does. I won't fault her entirely, she has alot of different feelings & her hormones are changing the way she acts, she has more testosterone flowing in her now than in her 20s, she is becoming more aggressive, louder, and she definitely has urges to be sexual with other men.
Stop doing things for her, the more you do, the more she will disrespect you for it.
I went through a hell that lasted several months and I couldn't realize that the more I did for her, the more of a slave I became, I couldn't do enough and the more I did, the more pathetic I was in her eyes. There were days sprinkled infrequently in between months of agony & pain where she normally acted horribly to me, those infrequent days she acted normally & appeared "nice". I'm not sure if she was actually being nice and giving me a break because sometimes she could see how much my spirit was breaking (she could see it all the time, it was evident, I literally began to walk on eggshells around her and jumped whenever she asked for anything and did everything she barked at me to do).
Don't go through what I went through, it starts off small but snowballs into something tremendously huge & ugly.
I personally kept thinking maybe if she sees how much I love her because I will do everything she asks and that will make her happy.... and that NEVER works. If you want to save yourself some pain (and literally who doesn't), respect yourself and listen to me. You can either benefit from the wisdom that I had to learn the hard way, or you can do what most do and follow your own logic and and experience exactly what I went through.