Overbearing Mother

I don't know if I need to vent or if I'm seeking advice but I just need to get this off my chest. I am 33 years old. I struggled with addiction for about 15 years. My sober date is my daughter's birthday in the beginning of February. I'm fortunate enough to have very supportive family. My mom and stepdad have property and they built a two-bedroom house/ apartment for my daughter and I on their property. I just want to make it clear that I am beyond grateful for the support I have from my family. However, the issue I'm having is, My mother is and always has been very controlling. If I dress my daughter in something she has an issue with it. Or she buys huge gifts for my daughter and expects me to fit them in my small space. I've saved it money to put decor in my house that I like and she tells me to return it. I understand then I wouldn't have a place to live without them, but I feel like there's some things that I should be able to have in my space. My biggest issue was with trying to get my GED because if I don't have my GED and get enrolled in school by my daughter's birthday I will lose all my benefits. So my mom offered to help me pay for it and then never did. If I brought it up she would tell me to call DSHS and ask for help which I did multiple times and they put in a referral and never got back to me multiple times. Thankfully my grandmother did help me out. Like I said I don't even know why I'm posting this. I'm just frustrated and I feel like everything I try to do. My mom tries to control. Something's really irritate me like the other night. We were eating dinner at their house and my daughter didn't eat but a couple bites and then my mom wanted to give her a piece of chocolate and I told her no. She didn't eat any dinner and my mom still gave her the chocolate. It's like she has no respect for me as a mother to my daughter. If I try to express my feelings to my mom she gets mad at me. I try to tell her how grateful I am all the time I pitch in every chance I get. I use my benefits to help pay for groceries not only at my own house. But I also buy all of the meats for the family because my dad is a butcher. I know this probably sounds very chaotic, but I literally have absolutely no friends and nobody to talk to about this. And I feel like I'm going insane. I am exhausted all the time. I get 8 hours of sleep a night and sometimes I sleep while my daughter naps during the day for 2 hours. No matter what, I am exhausted. At any point in the day I could close my eyes and fall asleep. I've been screened for postpartum depression. My doctor doesn't seem to think that's the issue. So she's referred me to a sleep study, but my consultation isn't until May 12th. I just feel like I'm losing my mind.