Car Repair or purchase

Hello, my name is Chris. Im a recently single father. My daughter, Mackenzie, is 4 years old. The reason Im here because of events that have challenged my ability to provide and I can't find a way out of this mess. My fianceed walked out on us and ran off with someone from out of state with no notice, and unfortunately took MY car with her. The police wouldn't do anything even though it was in my name. They said i would have to take her to court. It was since reposessed. I live in a rural area so theres little to no public transportation. After losing my house and my car and trying to learn to raise a little girl by myself, i had to move in with my grandmother who is quite old. she's my only family with spare room. shortly after coming up here her car broke down. the shop here wants 75 dollars to tow it there, and then 800 dollars to repair the car. this happend in November. Ive been walking 4 miles to the store with a backpack getting food since then. Family is quite spread out and there's only a few of us. I need to get a car again. I need to work, to provide for my daughter. I have someone willing to babysit and let me get on my feet, i just can't get my daughter there. I was at my last job for 4 years, and I have plenty of desire to work but I feel stranded. My grandmother is too scared to babysit my daughter, as she's a little hard of hearing and doesn't get around well. To sum up my problem: I have all the love for my child on earth. Willingness to sacrifice anything and everything for her happiness. I take being a dad very seriously. Being stranded is holding me back. I'm pleading for help either buying a cheap car or fixing my grandmothers to get the ability to get back to work. I'm 7 miles from the city and there's plenty of work there. I never planned for my daughter and I to get abandoned, but I will do whatever it takes to make sure my daughter is cared for. Even if it's walking through to mountains 4 miles 4 times a week to get food. Thank you for your time, god bless. Whether you can help or not, thanks. Chris