Megan A doesn't have a gender. Since A was a baby they've jumped back and forth between male and female bodies. A does mention in the book that there was a point when they were younger where they liked having long hair, and would be upset to wake up and it be short. But there were other times when A felt they'd fit better in a boy's body. It was like going through phases, at one point your favourite colour is green but a few years later it might be blue. Once A is older I think they've come to terms with their inability to define themselves as either a boy or a girl. They just see themselves as a person.