Would it be in my best interest to try and find out who and where she is or not? Yes, my H would be unhappy. But four months ago I found info on the OW at that time and she split with him.
Which goes to show that there's no point in finding out anything about the OP. It's never about them, anyway, and besides, what you may find out can cause you misery or haunt you. Not always... there was a time I used to snoop a bit and found some purchases the OM had made, and they were upsetting, but then I found he had bought a penis enlarger, and figured I could now stop snooping on that high note.