It's very rare to see a Courte nymph give their time to one of the scatterings of pocket dimensions that now make up the broken universe. It's riskier in the outer rings, there's an expectation to carry an identity, and the land is often sickly. Most are given the choice to work with Courte royalty, as they're in tune with the universe and can help to prevent another shattering. Button is not one of those Courte nymphs, she only seeks chaos and took the only method presented to her that wouldn't lead to her execution. Button wants to poison people.

Having pledged his loyalty to the Circus of Dreams, Button is given permission to serve confectionaries to the employees and victims. Their creations are treated as good fun to the immortal fae, but often prove to be lethal to those not protected by the dimension's good will. Button is a creature of chaos and poisons, and even his smile can be taken as a threat. To many of the resigned fae in the circus, it is uncomfortable to be around Button because somehow, he is gleeful in what he does and the pain it causes.

Button's loyalty to the circus is surface-level: Button is loyal to whoever keeps the land. It is healthy and soaked with blood. Button will do whatever they can to continue to grow here, and the Ringmaster acknowledges that they are at risk of betraying... By joking about it with the mushroom. He seems unthreatened at the possibility.