In her first appearance in "Read Aloud", Molly Wetta's library oversees a reading contest where the winner will have a private party at Spunk E. Pigeon's Pizza Palooza Paradise. As Lisa owes her library a lot of money in overdue library books, she had to dress as a cowboy. Due to not reading her assigned book when it came time for Wetta to quiz them on what they know, Lola gives her the wrong answer removing the Loud family from the top spot. When the deadline ends and Lola admits their failure being her fault, Lisa prematurely sheds her disguise as Wetta recognizes her as the patron who owes her $50,000.00. By the end of the episode, the Loud family watches from their window as Wetta chases Lisa down the street while still demanding that she pay her overdue fines.
In "Hero Today, Gone Tomorrow" when Margo checks out a book, Molly Wetta takes her library fine down for free because of her one-in-a-million soccer goal. Later, she does the same for Lynn when she gets the spotlight back from Margo.
Molly Wetta has light short reddish brown hair, glasses, a green jacket, a yellow dress, and brown flats.