"Ah, back to familiar territory. That's comforting."

Giggle! "The third passenger is I think also tied to the Alliance - though I think she isn't loyal to them."

"Not after the first two, then."

"I think she was sent here, but I'm unsure for what - she's quiet, and very hard to read."

"Captain's past starting to catch up with her again, maybe?"

"Or Book's. She was very interested in him. Though possibly just in climbing him like a tree."

"Thank you, River, I'm not sure I needed that mental image."

Giggle! 

Dramatic sigh.

"Want me to give you better mental images?"

"If you can, little imp that you are."

Hmmm... "Somebody climbing me like a tree."

"Somebody? So anyone will do?"

"A very pretty girl."

"Narrows the selection pool considerably."

"Small enough you can narrow down who you'd like to see climbing me?"

"I can't deny that I will always have a favored candidate in mind."

"Because you have very good taste," says River, in the tone of a girl who's definitely reading her sister's mind. 

"I do like it when you agree with me," she hums, making sure that her mind is full of plenty of things that will entertain her sister.

Squirm!

Ellie likes it when River squirms, too, and can think of plenty more reasons for her to be doing so.

Like kisses? 

Among other things. There's a great deal more than kisses involved in the activity of climbing, after all.

Well, kisses will be where River starts if Ellie keeps thinking like that...

Maybe next time she'll have to do a little prep work. Put River in a position where she has to stop and listen to Ellie think before acting.