Just wanted to add my two cents as a trans woman. The mother is pretty transphobic, but she's not necessarily wrong. Transitioning is a decision you have to make for yourself, not for other people, and MC is now in a unique situation where she has become free to examine her gender and figure out how she wants her body to be. Based on the previous chapters, I think it's pretty evident that she's feeling pretty heavy dysphoria after the changes, so I hope she does still get to start hormones before there's even more drastic changes, but I think it does make for a compelling story to actually examine your gender instead of assuming it matches your sex at birth. Though I gotta say, if I was born with ovaries and then they were suddenly gone one day, I would be absolutely devastated. And the mom's comment about skeletons is unnecessary and untruthful: I obviously don't know how the fictional disease works, but the only bones that would change significantly are the pelvis and maybe the cranium. And the skeleton wouldn't be different if it was her a change to her body, so this makes it sound more like she got an entirely different body that's just not hers