I think being there for her and letting her be honest about how she feels is a way to help her. It sounds like her family is pretty invalidating of her feelings and in turn I am sure she has issues in dealing with sadness herself. My family was like that, but eventually you have tonaccept how you feel to be able to change it. It is hard to have someone you care about being depressed, and it is worse if you have depression yourself so you are inclined go there with her.

Hopefully she can begin to challenge her thoughts and evaulate how she thinks and feels. Myself I struggle ity feelings of worthlessness and a general negative outlook. I can look at my thoughts and find reasons to justify those feelings or reason that those feelings aren't a refelction of reality. I think therapy could help her if you can find a way to get into it without jobs.

They also make low cost antidepressants. Intired Prozac and it was $4 a month. My general doctor prescribedd it for me.