best and worse thing to ever go through

[eyesopen]

I received my first casual phone call today from my w. Should say first in a few months. My son had a fun run at school today, and my wife attended. The call was basically to let me know how it went, and to let me know that she had to pick up my d from school early, because shes a cold. She also let me know about her plans for the evening. As always I was polite and interested. I have read in a few places that you should reward good behavior. Mind you this call is only two days since she was pretty cold towards me. My question is when she drops the kids off do I say thanks for the call? Or just let it be since I was very welcoming to her when she did call. It all seems so minor but I do know it is all about the little things right now.