Patty knows she can show up at somebody's door out of time. That is, no "later that day" or "the week before" or "for the third Tuesday in a row" required.
But the question is, whom will Patty visit? (If Patty's telling it, maybe she'd use "who" in that question.) They don't have to be knock-on-the-door visits. She could sneak past the door, pausing to listen. She could pretend. She could be told about it. She could remember. All that has to happen is that the scene be cued, at which time Patty could vanish until needed.
I'm less enthused about research on condo conversion (which, supposedly, is the issue hanging over all the characters) (condo diversion, I scrawled at first at the coffee shop this aft, as if to escape my task). If people have to come together around this issue, I'd better know how.
It's fine to speculate in this manner because until I find out what Patty, or somebody else who carries the story, wants to do, I won't know.
In the meantime, I'm going to try solo percussion for her hallway dance.