<human>: Give me the gist of the text in a nutshell

throwaway because she knows my account. I've been with my gf for a little more than a year now. I was there when her mother passed. She was there when my grandmother passed. I went with her everyday when she was in the hospital and rolled her everywhere when she was in a wheelchair for two months after she was released. 

We just moved in together and its been two months. I've noticed she's changing. She used to hate to drink and now she wants to go drinking and she smokes everyday, I told her from the beginning I hate both of those (family always did it I'm tired of what it brings) and she liked me because she was the same way. 

Now basically I have a full time job I'm still getting used to and she has a job right now but she needs to have surgery on her knee, immobolizing her for at least a month. I've been killing myself making overtime just to save up for that and she gets pissed that I said her new tattoo will probably have to put on hold financially. I am just depressed about everything I come home expecting her to be here so we can just relax but she always tries to invite ppl over or try to go out. Tonight she told me she was going with friends I was tired so I said ok I'll be asleep anyway go have fun. She said she wants to drink today and doesn't know when she will come home. 

I feel like I have all weight of the responsibility as far as rent, bills, and groceries and just making ends meet and she just goes off I'm not happy, we've talked before whenever we argue but I think I'm tired of all this frustration and I don't know what to do. If I leave I leave her in a really bad position she'll have to move in with her aunt and they really don't see eye to eye. She used to cut I'm afraid if we end things she'll go back to that. I need advice plz no one I know suspects that anything is even wrong I can't talk to anyone I know I really need to get my head on straight.
<bot>: my gf is making changes I honestly don't like with her personality, but she'll be in one hell of a tight spot if I leave please help