She, along with Lana, practices hall monitor duties in the hallway in their house, writes up anyone who disobeys the rules, and sends the biggest offenders to jail, one being Luan for telling bad jokes.
Her idea for payback against Lincoln's bully who she thought was a boy is to invite him over to their house for a tea party and make him use the chipped cup. She then comments on how her evil nature can scare even herself.
After finding out about Lincoln's earbuds, she comes up with a plan to get back at him for ignoring her and their sisters by having them tell fake stories about what she did to them over minor accidents.
The Pudding Incident: She popped Lynn's soccer ball for eating the last pudding.
The Tiara Crisis: She gave away all of Leni's stuff for breaking her tiara.
Sneeze-ageddon: She cooked Lori's phone for not saying "bless you" when she sneezed.
The Frog Fiasco: She killed and buried Lana's frog, Seymour, for prematurely croaking and making her ruin her makeup.
When she's (presumably) the last sister in the bet to take on Lincoln, she shows off her makeup-smeared face in a darkly lit atmosphere with empty pupils and a sinister grin, all while trying to make Lincoln strip down to his underwear.
When the girls need to get more food and suggest drawing straws to see who would have to go out and suffer Luan's pranks and Leni concedes at being a terrible artist, Lucy tries to correct her, but Lola silences Lucy and wishes Leni good luck.
When she isn't allowed to join their secrets club, she eavesdrops on their conversation and uses their secrets against them by threatening to tell them to their parents if they don't comply with her demands.