April closed her eyes and reached into Kat's mind. It won't be hard to find the Beast, and touch that part of her mind only.

Using the word 'Nightingale', she starts to place a hypnotic suggestion on the Beast. That every time it hears that word, it will go into a slumber. That it will be less able to control Kat... and less likely to desire the blood of others. And that with this word... Kat can start taking the steps she needs to find a better balance between her humanity and her Beast.

"There. It is done."