Lifetime movie experts. i need your help!?

i need to know the title of this movie. all i can remember is its about a girl. her uncle is the same age as her. she lives with her grandparents, mom, and uncle out in the country. when she was a baby they left her on the side of the road. she showed up on their doorstep wearing a necklace. as she was a bit older, a heavy set black woman caught her eating the tomatoes in her garden. she ends up spending a lot of time with her learning to read and cook. her mom tries to get her to go out to a bar so she can set a trap to mug a guy for money so they can eat. if you can help it would be great!!!!