"They seem related to gates but it's not obvious how."

"I wonder if there's a way to find one other than just stumbling upon it at a very inconvenient time..."

"Not that I've ever heard of."

"Oh, actually, I know exactly where one... well, used to be, it may no longer be there, it's been years since I've visited it."

"I think the consensus is tears disappear when someone goes through them."

"...mine didn't. Maybe it was a forgotten gate instead."

"More likely."

"I wonder if we can glean any information from looking at places where tears used to be..."

"Could take a harmonic map, if we knew any such place."

"Well, if I think of anything else I thought was impossible and slash or no one knew I'll check before I make assumptions. Anyway, food?"

"Food." Food!

Food!

"Any idea when Yellow's coming back? I wonder if I should buy a motorcycle and for moving around in fairyland. Or a helicopter. Ooh, or if there's sorcery that can do flight."

"It seems unlikely that there is preexisting sorcery that can do flight. Unless you want to see if I can consensually sparrow you. Yellow will probably be a few hours more."

"...can one be unsparrowed?"

"Yes. I know how, or you could just go to the mortal world."

"Oh, right, yeah, you mentioned, unsparrowing in the mortal world, right. ...I kinda wanna try it."

"It might or might not work, but I can try it. Now?"

"Sure! If it works I won't need to be so constrained in how fast I can move, at least when you're around to unsparrow me at my destination."

"Sparrows aren't that fast, but yes." Promise turns her into a sparrow.

She flies around and makes a noise that might be a giggle. Can plain speak understand what she's communicating in this form?

Nope.

Oh well. She flies around a bit, having fun, and eventually lands and gives Promise what she hopes is a meaningful look. Being a bird, she probably does not have much in the way of facial expressions, but still.

"...hop once for 'turn me back now'?"

Hop.

Desparrow.