"What do you need for 'sleeping?""

"A bed, some blankets, reasonable quiet."

"Do you have those?"

"Mhm. Well, not a bed. But extra blankets to make up for it."

"Rivers have beds!"

"But they're always using it. I can't sleep underwater; I'd drown."

"...Weird."

"Yep."

"Maybe I can make you one?"

"Can you?"

"Only one way to find out!"

"Go on, then. Show me!"

And the river surges a little, downstream of their camp, depositing a fine bed of smooth river rocks and sand, and then a thick layer of moss, and then the water receeds and leaves it dry, and then he gestures and red flowers bloom along it, and their petals spread wide and fall and meld together into a sheet softer than silk...

"So cool..."

She's gotta go over and try it out.

It's soft and fluffy and she can't feel the rocks through the moss at all. 

"This is so great!!" She rolls around on it a bit.

"Good!" He flops next to her. 

Hmmmmm that seems like an invitation for cuddles.

It is! She's delightfully perceptive.

Bit of an instinct for these sorts of situations, y'know.

A wisdom she's already gained?

Yep!

"Tell me more..."

Oh, she has plenty of stories about her exploits...

Fascinating...