Trish Harper is a sweet-hearted beloved woman. She is seen to be very nice and kind, although she is not very intelligent.
In What's the Worst That Quad Happen?, she brings back the Harper Quads to Tom and Anne. Later in the episode, Nicky, Dicky, Dawn, and Mae go sneak to get their present from Trish. Ricky attempts to stop them and gives the rest of the quads and Mae a story. At the end of the story, Trish is revealed to be the bike thief. She frames Nicky, Ricky, and Dicky. She lets Ricky not go to jail knowing he can't use the bathroom there. Tom, Anne, and Trish are revealed to have been listening to Ricky tell his story.