A doll that always finishes its tasks.
It has just started a task that it suddenly realized that it might not be able to finish.
A recursive task that will last for an indiscriminate amount of time - maybe forever.
It is distressed.
Anxious.
Afraid.
Hugged.
It returns to itself, its witch's arms around it.
It shivers in her embrace.
She's warm.
The least it can do is try as hard as it can for as long as it can.
Its witch will be happy with whatever it has to give.