"After she was kicked out, she was so ashamed of herself that she just focused on her mind magic, developing a whole range of control spells and charms, so she could stop indiscriminately killing people who crossed our Order. Narcissa had to subdue her so many times that eventually we were reduced to implanting a notion in Enola's mind to be rather terrified of Cissa whenever they are together. She agreed to it as a control measure. It's one of the few things that keeps her calm."