Ava nods along, her expression trying very hard to convey the appropriate level of concern and sympathy toward Scott's shock of the killer piano encounter. Nine months in and she's fairly used to this sort of occurrence, but she also recognizes the fact Scott is going through arrival panic and... well, she feels slightly obligated to help him out. Considering.

"Mn... because you never actually left. Or the you that's you right now is here, but the you that's... there is there." She holds up two fingers, together at first, then splits them into a peace sign. She knows he's spent enough time around the Pyms to have at least some basic exposure to theoretical nonsense, right? But she's keeping terms simple. Not because she thinks he's dumb but you know, probably overwhelmed.

"So now there is you and you... and if you tried to go back..." She crosses her fingers. "Obviously you can't do that. Because you're already there."