This is not a treehouse bathroom. It does, actually, have a recognizable restroom sign, over there?

Bonesaw almost turns off her bladder, before deciding that a bathroom is probably a good way to have an excuse to look around a place without answering questions.

The bathroom is alarmingly normal. Porcelain toilets. Tile floor. Bright ceiling lights. Mirrors and sinks and stalls. Pink liquid hand soap. No-touch paper towel dispenser.

Bonesaw's hair is dyed bellybutton blue so hopefully no one will recognize her but... oh her hands are not exactly in a good state for her not being recognized. She washes them.

She missed pink soap. 

The pink soap is completely normal and does a normal job of washing her hands.

When she emerges from the bathroom the floor goes from tile to wood, and there's a window full of exploding stars next to the row of padded leather booths and their tables, and there's an unstocked unstaffed bar with stools,

- with one guy sitting at it, drinking a mug of coffee.

Bonesaw is confused.

"Your wings are really pretty but also muscles don't seem like enough to make them work very well."

"Oh, uh, yeah, they wouldn't work great on humans. I can't get too tired."

"How?"

"I'm indestructible. That includes that I can't get too tired, if I don't want to, it just stops at a certain point of progression."

"Oh I had a friend like that."

"Oh?"

"Yeah, she wasn't blue though."

"That's an individual fashion decision."

"Like my hair."

"Like your hair, yes."

"How did you get here?" 

"Walked through a door and this was here instead of what's usually on the other side."

"Oh that's also what happened to me."

"I think it is the standard means of accessing the place. - the bar is a person, she writes on napkins to communicate."

"What sort of places do people come from?"

"Dunno, you're the first other person who's walked in since I've been here, I've just been talking to Bar some."

"By writing notes?"

"She can hear, she just writes in response."

"Oh huh, that's neat. Does she also serve drinks?"