Hollywood has a problem. It's largely run by rich straight white men who, for the most part, champion the work of other straight white men. According to well publicized statistics, if you're a black, Hispanic, female or LBGT actor of director you've not been invited to the party. Getting jobs, good jobs, Oscar potential jobs, is nearly impossible.
Listening to her albums -- and I mean actually listening -- will give you a good idea of the phenomenal and underrated pop music Hannah is making, similar to Sara. Both are subtle, unassuming women with exceptionally powerful voices, both literally and in what they are saying and how they phrase it.