I need help deciding😪

So my sister and I have been kicked out of my parents and we both have 1 1/2 year old babies, I don’t really want to rent a house with her because she does nothing but lay in her bed and never cleans and picks up after her and her baby, and she makes me babysit her baby every day so she can go to the gym..it makes me miserable I already have to look after my own baby I just can’t but then I don’t want to leave her. I have to move an hour away from my parents to be closer to my baby’s dad, because I have no car to go pick her up (court arrangements), I have a friend and her baby to stay with out that way but idk how to tell my sister. She’ll hate me. I just want to do it for my own sanity I’m sick of not putting myself first😭😭😭 I don’t wanna leave her with nothing and stuff:/ what do I do?