Near miss in a parking lot

[Foobar 775]

I had just stepped out of the store, and as I turned around my car to get to the passenger side, I see a woman appear on the passenger side of the next car (through the windows) standing up (she must have been squatting) and pulling up her pants. I get into the passenger seat of my car, and discreetly watch her buckle her belt. 

I was optimistic I'd get to checkout the puddle as I was waiting for someone to return. But she refused to leave for some reason, loitering though it wasn't obvious what her intent was. The person I was waiting for eventually returned before she left, so I didn't get to see the aftermath.