Mother of two need help with getting a car

Last year was rough on me and my family. We lost our house, wrecked the car and lost our jobs. My husband recently was arrested. Therefore its just me working and taking care of my two kids. My son is 3 my daughter will be one in april. Right now my grandma takes me to work and where i need to go. But this is very tiring for her and now her truck needs to be put in the shop. Im trying to get up enough for a car so i can keep getting back and forth to work.