Nicola only really started thinking about their gender in their late 30’s...so, not long before the beginning of the novel. They prefer they/them but they don’t mind he/him or neopronouns (they’d probably like some neopronouns tbh) There’s only one set they can’t handle...
Also I’ll post a proper drawing of that harpy, Scarlet Feather, at some point. Annie's here too i guess