Single mom struggling

My sister has recently became a single mom of 4. She is barely getting by on her own now and and is barely getting by. Then 2 days ago her car broke down and she can't afford to not get it fixed but also can't afford to pay for it. She lives about 6 miles outside of town and can't just walk to work or the store. She needs helping getting her car fixed and paying for an Uber to get her to and from work and appointments. I hate see my sister having such a hard time and not being able to help because I am unemployed and homeless. Thank you for taking the time to read this thread we really appreciate any and all advice anything you can provide for my sister and her kids.