As mentioned before, Violet has no lines along the film. However, she does appear a couple of times. First, she is next to James P. Sullivan when Mike Wazowski catches Archie the Scare Pig. She places a Monsters University sticker above the Fear Tech logo on his side.
Then Violet appears at the start of the first event of the Scare Games, when Maria Garcia tells Brynn Larson she is scared of the toxicity of the balls. At the second event, Violet is helping her sisters lift Brynn to reach their flag. They eventually fall, and after a second try, they are disqualified from the competition because Scott "Squishy" Squibbles is able to reach the Oozma Kappa flag.