"Yeah, I'll see you tomorrow." 

He says goodbye to the deputies, and drives off.

And Yeong and her child return to their place.

Where said child promptly uses the key on the door to the kitchen.

This isn't her kitchen.

It's a motel room, filled with the bright light of the midday sun. It's hot, but not uncomfortably so. Toasty. 

"What...?"

"Wait for it." She walks into the room with the key and closes the door.

The door cooperates. 

Either one of them is welcome to open it again.

Kaede can also have a look around.

Yeong tries to open the door again...

And Kaede does, too, wanting the door to open to her bedroom's.

Did Yeong want her kitchen? Here's her kitchen. 

Kaede, on the other hand, can open any door.

Her bedroom is just as she left it.

Yup. She closes it, then wants to open the same door, but on the other side.

(What happens to this room's doorknob when she opens a door that would have its handle elsewhere?)

It doesn't seem to matter.

The door she's aiming for is still a door, after all. 

The inside of the door is the same, regardless of what kind of door is on the other side. 

But what about the hinges, they're somewhere else!

The hinges are in the proper place. 

The door opens as she would expect her bedroom door to open.

"I can open this door whenever," Kaede belatedly explains to her mom, then closes the door, and wants it to open into her bedroom again. The hinges should be on the other side now, so what happens when she opens it...?

The hinges are in the proper place.

Again. 

Did they, like. Change. In front of her. Did the knob just move. Or what.

The hinges seem to be in the same place, but the door opens in the correct direction. 

Are the hinges changing or something.

She opens the door out of her room again—

—where her mother is looking at her. "Why couldn't I open your door?"

"'Cause I was using it, probably. This room can open out of any doors, I think."

The hinges do not look like they move. The door opens in the other direction anyway. The hinges seem to serve no purpose at all. 

"Any doors?"

"Yep. Wanna visit Maui?"