How do you draw boundaries when you still need help?

Idk why some.parents are like this but im doing my best to take care of my kids and work. When i was getting them into daycare bc my parents wouldnt watch them (they dont have to ofc but if u wont watch them they have to go to daycare) my mom threatedned to throw me out. While i lived there i was treated badly. Before i moved out my car gave out and my mom wanted my whole refund so i could have her car/transportation. I obviously said no.. now i split my ebt with her bc she does help with picking my kids up from daycare but bc she got 10$diapers for my kids she tacked that on to what im sharing with her in ebt to get more. I really need what i have so i dont spend money. I dont make much on my job and my hrs have been reduced at times.. what do i do? I have talked to my mom about her ways shell shut me out,tell me to shut up or not see where shes wrong.@J- youre absolutelyright. I just have ti take it for now. Im going back to achool soon. @Realist : no i didnt.@ GG i already have state funded daycare and i applied for section 8. I still need someone to pick up my kids while i work so she does that atleast. Im trying to be as independent as possible but on my journey there i need help.