Of course she was hot to trot! An A jump starts her sexual desire.
IMHO, if the W is not kissing her H, it is not a good sign that she is in to him. But she can have sex with him and fantasize about doing it with the OM.
IDK, if it's just a woman thing.........but, intimate kissing is a very good measuring unit as to how she feels about her H. When a woman really wants to make love with her H, she'll want to kiss him. There is a difference in making love and just having sex.
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!