—A distressed Leanne to Harry, Ron and Hermione.[src]
In her sixth year, she and Katie went on a weekend trip to Hogsmeade, and they stopped off for a drink in the Three Broomsticks Inn. Katie excused herself and went to the restroom whilst Leanne sat alone in the Inn. After some time she was spotted by Harry Potter sitting tapping her glass anxiously awaiting Katie's return. Finally, when she and Katie were returning to Hogwarts School of Witchcraft and Wizardry after their visit toHogsmeade, she and Katie got in an argument over a package that Katie had been given to take to the castle, Leanne did not want Katie to take it, as she did not know what it was. The argument caused the girls to fight over the package and Katie to accidentally touch the cursed opal necklacethat was given to her by Madam Rosmerta, who was under the Imperius Curse at the time, when the package's wrapping tore.
Leanne was very distraught when Katie was put under the curse, trying to pull her down from the sky in which she floated above from and was seen crying. Harry, Ron and Hermione got to the scene and, with the help ofRubeus Hagrid, they got back to Hogwarts with Katie. When they got back inside the castle, Leanne broke down crying when tellingProfessor McGonagall what happened and was sent to Madam Pomfrey for calming down. After Katie has been healed and returned to Hogwarts, Leanne was present with her when Katie told Harry she did not know who gave her the package.