The game dead by daylight houses monsters which cannot be attacked however this is a little different.

The plague had an outsider someone she became absolutely obsessed with, unknowingly this was actually the abyss she always interacted with. She managed to capture it upon it taking it's human form due to it purposely allowing her to do so. Now with this it's been slightly changed.. the abyss which was mostly all powerful has changed but it's better in some ways. This change took eons and having enough it finally left the plague whom captured it and bid her farewell in her chamber.

It looked over it self and inspected the minor changes.

Before going out to interact with the outside world