Pinwheel is a character in a cartoon made for young kids. She is absolutely done, but the contract she signed to have the job basically bounds her to it forever... Having to act as this bright and cheery persona takes a toll on you. The person she is really like is not as happy-go-lucky as her character is. She asked for this job to get away from stresses of the real world, but instead the stresses of this cartoon world are bigger.
(Totally not vaguely inspired by the Amazing Digital Circus 0:<)