Every single article I've read about a child being transed, whether it's in the Daily Mail or a more reputable source, or a mummy blog or whatever, has mentioned that they preferred 'girly' toys or rejected 'girly' toys. Girly toys are always dolls and princesses. Boyish toys are not mentioned as distinctly. Usually girls who want to be boys are framed in terms of their rejection of the girly toys.
So is it all about the toys? My three year old has made enough throw away comments ('I want to be a boy knight', sticking a macaroni in her labia and boasting about a willy) and has had enough interests in pirates, dinosaurs etc for me to trans her if I was so inclined.
Does anyone have any articles or links that don't mention toys AT ALL? I'd really appreciate it if you had any...I'm just finding the whole thing so clear cut in that EVERY CASE I've read is about a rejection of social constructions of gender, guided by the parents, rather than an innate femininity that represents what real females feel or whatever.