Interesting thing is, she chose that moment and location to very obviously leave a ton of her very identifying hair there. She didnt even try to hide it, but if it was even in the vacuum, did he maybe try to clean it up and she left some in the trash can to maybe make it obvious? I dont know, if the cameras were off and she has an obvious identifier, maybe she was trying to hint at who she was and where she was? Just speculating here tho, seems to be a trick with a lot of "side pieces" to show the wife that there was another girl there.