Tell me, do you know what a doll really is? A happy little thing that is beholden to its specific purpose, a specific being - that's what they always say, right?
You do understand how they got to this point, right?
A doll is a doll before they ever end up in their shells of whatever it is they end up made out of.
They don't come into existence trained to seek out Purpose and Stillness - no that happens somewhere along the way.
A person becomes not a person.
They know witches before they even know what the concept is - witches in a different way than the ones we usually speak of - witches that need no magic to effect their ways.
Take, for example, the "gifted student".
That's a doll right there.
Their Purpose is success in education. Their Stillness is respite from the otherwise ire of their witches.
They aren't a person:
They're their achievements.
And, tell me, doesn't that sound just like a doll to you?