You are right, don't concern yourself with her. Don't give her power by mentioning her name or reaching out to her. Worry about you and your techniques. They are working. That's what matters.
I know its hard to forget or worry about the other person. But we give them power when we mention their names or talk to our spouses about OP. Forget they even exist.
It's so hard to not think about her -- especially because he calls her as soon as he leaves the house.
________________________ M: 35 H: 36 M: Together 16 years; M 6 S14, D12 BD: 8/11 H Moved Out: 8/13 PA confirmed: 9/2 H Back Home: 9/27 OW Says she's pregnant/R on hold: 10/12