There was a mum in my child’s school like that. Only she insisted that her son was trans and that he was now she. He had long hair, wore dresses to school.
Then she had a baby girl after years of secondary infertility. When her girl was born, suddenly her other child was a boy again, over night. He was only 7, she was pushing and pushing how “girly” he was from when I knew her at baby groups. One of those mums who insist thier 6 month old loves pink and refuses to wear another colour (the eye rolls she used to get!) Then as soon as she got her girl, she forgot all about it and he was in jeans, dinosaur t shirts and his hair was short.