How to get back my love?

the boy iam in love with loves me a lot my parents are ready for the marriage but somehow the boy,s mom is not ready she is very apprehensive about me . she thinks that i may be a financial burden to her son . i was previously working but know i am pursuing my mba so have left my work i also tried to talk to her but she is not ready to pls help me so that she happily agrees our marriage because for my boyfrnd it is really hard to leave his family . please suggest something that would actually help me to make her understand and fix our marriage