Rigel and Orion’s betrayal of Poppy’s secret, the book suggests, is another prime reason why Poppy’s gender shouldn’t be a secret. If more people know about Poppy, she would likely learn that there are a lot of people like her. Rigel and Orion are clearly advocates of the transgender community. They are committed to supporting Poppy in large part because she is their sister, but it is clear they want to be supportive in a broader sense as well.