Paula can't stop herself and uses the silver coin on one of Jed's coworkers.

Just as she was pondering the possibilities, the door to the break room opened, and one of Jed's coworkers walked in. His name was Charley, and he was older than Jed and Paula, in his mid-to-late-thirties. His thick black hair and beard gave him a sort of lumberjack vibe, thought the white polo and black apron he had to wear while working minimized that effect to some degree. As he passed Paula he gave her a nod, they knew each other well enough without quite being friends, and he apparently didn't even notice her changes at all, or if he did they weren't worth a comment.

On the other hand, Paula looked at Charley with new appreciation. That experience would be fun in the sack, and with the silver coin in hand she could change things, make it so they'd been involved for a while. Hell, she could make it so she and Jed had always been in an open relationship, with Charley as one of her pieces of side action. If she did it without him hearing, he might not even remember the old world. Of course, perhaps that wasn't using the coin as effectively as possible. What if she changed Charley to be more like herself, another wanton slut? The voice of reason in her head was telling her that both of these ideas were immoral, and shouldn't be considered. But that voice wasn't really in charge anymore, now was it.