"[S]he noticed there were more bills, lots of bills, in the snow near the sidewalk, and she figured she had better call police...."

If you would call the police in this situation, would it be because that's the sort of honest, upright person you are or would it be because it was broad daylight and the bills weren't in a neat little bundle but spread out on the snow, in which case the activity of picking them up risks: 1. making you look suspicious (and somebody might call the cops on you), and 2. other people showing up and competing with you in the pickup (in which case, you might need police protection and you want to be the one to get your name on the found-money claim)?