New motor for my car

Hi I'm Ashley and I've gotten myself into a predicament. I drove the same Mitsubishi for 7 or 8 years and it was showing its age so I decided to go get a new (to me) car. I chose a dealership near by and got this 2017 Hyundai Accent. 6 weeks in and the motor completely locked up. I can not take it back because I'm financed through a bank not the dealership so I now owe 15k on a car with a blown motor. I have a mechanic who will fix it for me but I don't have the money to give him. I work full time but I still just barely make ends meet with no extra so this has devastated me. I live 45 minutes from work and am having the hardest time getting back and forth. I'm a single mother and can't even be there for my kids school stuff right now because I don't have a way to go. This has taken me losing a little pride so please help no amount is too small!