I'm not following this girl's career, just caught her on a youtube clip of Jimmy Fallon, but is it universally acknowledged that he can't be the father? Or is there DNA testing which shows he is?
most likely is not his biological daughter (her mother is Debbie Rowe, a woman MJ paid to have his children). But there is no hard evidence (beyond she looks nothing like him/his natural born race) that she is not. It's been suggested that dermatologist Arnold Klein donated the sperm but that was denied.
I doubt we'll ever really know for sure. But honestly, I don't see what's so implausible about the idea that Michael had sex with his plastic surgeon, or donated his sperm to the cause. Between Michael's vitiligo and what he did to his face over the years, treating any lack of resemblance between him and Paris as evidence of anything seems a bit weird.