Hit and run repairs

My car was hit in my apartment parking lot. I'm currently struggling, after my significant other left on a whim on christmas eve. I prepared to struggle after he left, but the car was an unnneeded surprise..

Since they can't find who did it they are having me pay the deductible and get my own rental. I just paid the 400 car note... Rent is 800... I barely have enough to eat. 

Ive never done one of these, nor, reached out for help for bills..

But I'm at a loss for me and my child. 

Anything could help... 

Thank you

Mel