You would think that her experiences with the Challenor family might have made her take a step back and consider why she thinks male-born people can represent the rights of women.
Both Aimee and Aimee's former stepbrother (now stepsister) appear to have inherited David Challenor's interest in clothing styles. Both also appear to have inherited an interest in identifying as furry and identifying as incontinent, nappy-wearing toddlers.
I find it surprising that this hasn't made Sian wonder if she was right to invite David Challenor on Green party picnics, particularly as he was active in the Green party for over a year after being charged with the rape and torture of a 10 year old girl.
Note to Mods: Although I'm aware David Challenor identified as female when he raped that 10 year old girl, and made her refer to him by a female name, I am using male pronouns for him as I believe he is currently identifying as male.