"Until then!"

She'll eat all of it and get a tummyache, probably.

When he arrives at the location, she's already there, sitting on a bench with both legs pulled up so her feet are under her butt and her knees rest against her chin, her ...well, it looks like a fancy smartphone lying on the table before her, apparently playing a movie or something similar. At the moment, she's too immersed to notice his approach.