Then Pen will have lots of fun!

Excellent. That is definitely the idea.

But eventually she is tired of this game and wants lunch.

Lunch is provided!

Pen changes into it and twirls around. She doesn't twirl all that well - the wings provide a lot of wind resistance, it's what they're for - but she can do a little.

The Joker applauds her twirling!

Soon she is done. "Now what?"

"Mmm... d'you like books?" he inquires.

"Books okay," she says. "Kinda books?"

"Oh, I've got a buncha kinds," he says. "Wanna see?"

"Yeah."

So he shows her his books! They are many and varied and stored in diverse locations, including under several couches and in bathroom cupboards. But he knows where they all are.

Pen eventually settles on a book and starts reading it.

The Joker disappears into the dangerous room for a while.

Pen tries to sneak a peek when the door's open, but she doesn't touch it.

She gets a glimpse of a half-open cupboard. And then he closes the door.

Pen goes back to her book, and sings wordless tunes that she makes up in her head.

"I come?" she asks.

He laughs. "Nah, you wouldn't like these people. They're not very friendly."

"Why you talk them then?"

"Complicated reasons," he says, flapping a hand to illustrate the inconsequential nature of the reasons. "I don't mind unfriendly people, anyway. Not all the time."

"I go anyway? Small in here. Ignore unfriendly people."