Phineas drops his mango, startled as the woman trips, feeling in some small way that it is somehow his fault.
He goes over to check her, touching her arm comfortingly. But no sooner does he get the words ‘Sweetie, are you okay?’ out of his mouth then he realizes that it would take a lot more than a few stairs to throw this particular being off. She is his kind, the first he’s met in awhile.
So of course he gapes at her, completely unsure of what to say.