You gotta let her go man. She’s clearly a narcissist and that will NEVER change.
And Corey Wayne would spit his coffee out if someone told him you were trying to use his stuff to pick up your 6x cheating wife who is actively dating (6x that you know about. I bet there’s lots you don’t know about).
Dude this isn’t about re-attracting your wife. This is about you saving your own life and creating a path for your children to heal. Not one person here supports you getting back with your WW, what does that tell you? This is a marriage saving website, why would everyone here tell you to run? Truly, think about that.
Steve, please hear me. YOUR W IS SERIAL CHEATER. That will never change. Not with you, and not with the next poor bastard she manipulates into a relationship. She has a personality disorder man, the worst kind too.
Lastly, you need to find a way to NEVER go to your in-laws house again. Have your MIL or a friend drop them off or pick them up. I think you are using your in-laws as an excuse to peacock in front of your wife.
I hope and pray you can break free of this cycle of abuse.