If I didn't shave, tweeze wax etc, I'd probably have a bit of a beard by now (and a moustache and a mono brow for sure). And I'm not exactly old yet. That doesn't make me (or this woman) a bloke though.
If she wants to present in a stereotypically male manner (beard etc), more power to her, and she's as likely to be a fantastic parent as anyone else, but that doesn't change biology or genetics. A dna test, with the tester having no idea who's samples they're looking at, would conclude she was the childs mother?
I know it's not black and white, and I know it can't be easy. I think more valid research is needed, into why people think they're really the opposite sex.
If science can prove pink/blue brain theory (that a person can be born the wrong sex or in the wrong body), I'll be first to recant and apologise for my ignorance. Until then, I'm not buying into the current ideology. A pp was spot on with the emperor's new clothes comment.