Her voice has character. That's the point.
She's doing the best she can with a score by a composer who is one of many who hates singers, to an audience that prefers singers over actual well-rounded performers who ACT A SONG.
I don't WANT to live in what they call "a certain way." In the first place I'd be no good at it and besides that I don't want to be identified with any one class of people. I want to live every whichway, among all kinds---and know them---and understand them---and love them---THAT's what I want! - Philip Barry (Holiday)