Indeed. She describes in the TED talk and other interviews how her (now ex-)husband had clear expectations of how his sons would turn out - noisy, sport-loving, boyish etc. Younger boys met expectations. Eldest child was male but not like that at all. Sensitive, keen on dressing up, loved dolls. Endless arguments as Dad couldn't tolerate seeing his son with a doll. SG said she was fine with it, thought it very likely it signified Jackie was gay (at 2). Couples therapist told them (according to SG) that they should take Jackie's dolls away so the arguments would stop. SG went along with this. Jackie, not surprisingly, became deeply unhappy. SG's mum told SG to give the dolls back. SG unfortunately went a lot further than that. Parents split up and Jackie's very literal interpretation of the endless stuff that must have been said - 'Put that away! Boys don't play with dolls. What are you, a girl?' led to a persistent belief that Jackie was really a girl and that steps needed to be taken to make Jackie's body look more like what Jackie felt like inside.
[Every single bit of this is in the public domain, btw. Put there by SG herself.]