Jack doesn't just pass by when he sees someone sitting on the floor. Stranger or not, he still stops to ask, eyebrows furrowed, "Are you okay?"

He looks at the coffee when she suggests it and frowns more, for a second.

"Okay. I will." What can it hurt, right? And Jack likes trying new things.

He sits down by Jane, right in the middle of the floor, and puts out a hand to try her cup, as that makes the most sense. Of course, she can tell him where to get his own, he'll go.