Can I get some advice or encouragement??

Tonight I will see my W when I visit the kids. Each time this has happened there has been tension. Partly because of me - I'm angry - and partly because of her, she is irritable and moody. I don't want it to be like that. What I want to do is give her a nice greeting and a hug. Why? Because that is who I am. I want people to know that I genuinely am glad to see them. Even my W, who has hurt me and our family, is someone that I like seeing, albeit in tiny doses at this point.

Part of me says this isn't a good idea because I know my wife wants to eat cake. She wants this D to go smooth, so she can feel less guilty. She appears to be thinking only of herself at this point. Why should I help reduce the guilt?

Part of me also looks at LRT methods and I feel I shouldn't be too engaging. Also, part of me thinks acting this way would be a 180 and she would really take notice.

What should I do?