She knows when Daddy's about to cum to start massaging his balls. Then as he shoots and pulses, you keep stroking, sucking, and massaging, until he tells you to stop.
He says I worship his cock so well that there’s really no need for your holes anymore. Maybe we’ll lock you up? Maybe I can wear the key around my neck?
Helping Daddy enjoy his cake. She isn't allowed to even see his cock until she has properly given him her throat. The learning process is the best part.