Kithabel looks at the door out of his room.

She looks very hard at the door of his room.

If it even thinks about not doing what she wants she's going to disintegrate it and replace it with one of a completely different design and rearrange the entire hallway out of spite, see if she doesn't, it had better know who's boss -

She opens the door.

And Milan is flung through the air into Milliways quite unceremoniously.

Kithabel follows him through, so she can let him back into her world instead of him winding up back in his own again.