If he was younger, she would assume a prank.

It just sounds too ridiculous. But with his age... There's the vague thought that maybe there's some form of elderly confusion going on, but that wouldn't stop her from checking it out.

"Let me grab my coat." And once that is done, and shoes have been put on, she steps out.

And stops.

"What the fuck." ...She actually might have said that out loud. Oops?