Hello, HakunaMatata2014, and welcome to Psych Central! Perhaps it's more accurate to say that you choose to feel guilty. It's not your fault that you were born. You have a right to be here and to have your own life.
I think you are correct in saying that she's miserable and wants you to be miserable. I suspect she has some mental issues, too.
I had to get the support of a therapist to help me to break a unhealthy bond like this one with my mother. Alas, some of us just don't get the ideal mother with a wonderful mother-daughter relationship.
I suggest that you limit your time with her and not give her any more money. She is a grown woman, and if she does not know how to save her money, then perhaps she needs to deal with the consequences.
Okay?