She's not understanding

I work night shifts from 10.30 pm to 7.30 am. Then I also work at a second Job from 5-8. I mostly get a 5-6 hour sleep daily. I got a 2nd car that I have to paint. My girlfrend doesn't works at all. Our financial condition is not good at all and we're usually broke. We love in a bachelor suite and pay around 850 A month. All of the living expenses and rent and everything is paid by me. She can't work with cash cus of some criminal charges long ago so she can only work at cleaning jobs.. Daycares.. Stocking.. Kitchen work or jobs like that. Se don want to work at McDonald or places like this for unknown reason and other place she can't either keep up or get a job. I get exhausted with workin and everything and I have to fix my other car and sell it to get some money but can't find time for that. My girlfriend always always complain me about spending time together when we actually live together. I was with her yesterday after work from 7 am till 3.30 pm.. The slept from 3.30 till 8.30 and missed the 2nd job. Today I was with her from 3-6 hanging out. And went to the other job then. I am extremely tired and I wanted to work on my car but she got upset and told me to spend time with her. She never let's me do my stuff like that. Even if I go on computer to search for car parts or checkin g emails she gets mad. I can't even go to see my friends. She don't have any friends and family here. She cheated on me a year ago. And after that I saw dirty pictures sent and received to her ex on her cell phone that i gave it to her . It was after she lost the baby with me. She was 3 months pregnant. She lied to me the whole time about miscarriage. She told me after almost a year that it was not miscarriage but she aborted cus she was insecure with me after I got her a place to live when she had no place to live and when I decided to save my tuition fee for the coming baby and skipped the semester. She's bipolar and she gets cranky real easy. I have never cheated on her but I took her back after she cheated on me. And cus she had no where to go cus I kicked her out from my house and the roommates knew that she was a cheater so they didn't wanted her to live there. So I had to search a room to rent for her. I rented a room for her for a week at one place for 60 bux that I paid then again at another place a room for rent for 300 A week. I try to make her happy by giving her surprises and even sometimes I give her money so she can buy stuff. I even bought her a new phone. she don't cheat one anymore she's trying to be nice she make me food sometimes and put little cute notes with my food for work. She fights with me when I tell her that I'm tired and want to sleep a bit. When she sleeps around 12 hours and I hardly 6 hours after working 2 jobs. She don't want to leave me cus she have nowhere to go. I don't know how to make this "relationship" work. Please please please give me a good helpful advice and not just "dump her" sort of comments. Thanks

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