- Was diagnosed with a magical immune disease, making her allergic to magic, in her fifth year. She had to repeat her OWLs.
- Drank unicorn blood after she graduated in order to cure herself. As a result, she can no longer experience positive emotions.
- Burned down 12 Grimauld Place and the surrounding area using Fiendfyre, with the help of Caleb Flint
- Killed the unicorn whose blood Katherine drank. He is cursed, but not to the same extent as his sister. Please contact the Admins for more information.