Hate to be helpless when it comes to my kids.

I have a 20yr old daughter that have went through 3 miscarriages in a yr and a half. she is going through a divorce, got a foot job and started feeling extremely happy, then extremely sad. She has a boyfriend and he is good, but she wants a relationship. He wants to be with her ,but he is trying to get his life straight. he basically lives with her, He works and comes home to her house, he doesn't stay out all night barely even goes any where with out her. But he does talk to other friends that are girls. He is very polite and well mannered. My daughter has low self esteem. So, she is jealous of these other girls. All she wants is a baby and her own little family. which is exactly what I wanted when I was her age. I think she is repeating me. I really think she is going through depression because of the miscarriages or just having anxiety maybe. She calls me today to see if she can use my car, and I tell her I dont have enough gas, for her to just drive around. I live on a very fixed income, and she lost that job , because of missing so many days in her first ninety days. She was crying when she called me, but she didn't want to talk about it. I am a worried Mom. and feel hopeless.