And back to her first face. "I think average adult would be fifteen foot diameter?"

"That's a lot of mass. How do you squish it down to human size?" 

"I can control my density too, though not infinitely. So I'm pretty heavy right now, probably shouldn't try to ride a horse..."

"Thank goodness for cars then." 

"They're lot more durable!"

"And less inclined to disobey if you try to make it do things it doesn't feel like." 

"I wouldn't know! I think historically we'd just walk places? Or someone would pretend to be a horse I guess..."

"Oh, that might work better. Horses are built much better for going fast than humans." 

"Yeah. I don't get to be out of the city much, but different shapes are fun."

"And if you break a leg it's not a death sentence." 

"I'm not sure I even can break a leg? I'm only pretendingto have bones."

"I admit I know very little about how that works." 

"I have different parts of my body at different densities and kind of arranged differently? So I feel normal to the touch if someone doesn't super know for sure I got some bones wrong."

"I can show you some illustrated anatomy texts if it would help." 

"That'd be really helpful, yeah! Figuring out joints is the worst..."

"So I see." 

"Heh, yeah. That was fortunate, at least..."

"Human joints do get that mobile, occasionally; I wouldn't have thought much of it if I hadn't been looking." 

"Oh, good, I'd been worried it was way out of range..."

"I was deliberately phrasing my questions such that if you were in fact simply a hypermobile human there wouldn't be any risk of your assuming I was insane." 

"Good! I'll keep in mind 'hypermobile' for any future questions..."

"If I see anything else off about you I'll give you the relevant medical excuses." 

"Thanks! That's really helpful."

"You're most welcome." 

She smiles, and settles in for the ride.