Don't be surprised if she tries to have sex with you. That's always a big temp checking avenue. Don't show any interest. Don't believe anything she says. It's nothing but a test to see how emotionally attached you are to her. The only way the LBH can come out on top is to show he is over her. Your WW is nowhere serious about a "chance".
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!