I thought I felt a disturbance in the force earlier
I'll give her a chance as it's no sillier for the Doctor to regenerate into a woman than it is for the Doctor to regenerate at all, and the foundations for it to happen have been there in one form or another for probably decades (given the Time Lords are according to at least one story artificially created to keep the number of near immortals down), and despite some of the more stupid comments I've seen online about only men being time lords, it's been known there were female time lords since at least Romana.