Verity didn't really understand what it did was wrong. It didn't understand why you were so mad at it.
Just a few weeks ago, you had invited your friend over because Verity was creeping you out (honestly, when is it not creeping you out?). Your friend didn't seem scared of Verity at all. In fact, the two seemed to get along for a while.
But then your friend started noticing how possessive Verity was over you. Every time you tried to have a private conversation with your friend, Verity would always come in to see what you two were talking about. Got annoyed when you left it or talked about something else other than it.
...The yellow ball was becoming a problem.
So you decided to get your friend to research on it. And they'd made some progress!
But Verity wasn't having it.
And just last night, your friend was nowhere to be found. A puddle of blood in their place. Verity had killed them.
You hadn't talked to it since. And it was starting to get really annoyed of the silent treatment from you.