I also felt that my H didn’t appreciate me in our M. What areas of your relationship do you think she felt unappreciated? If I put myself in your wife’s shoes, I would like to hear some words of appreciation. Maybe you can try to do it in small phrases and don’t expect anything back, not even her reaction. She might not believe it at first, but she will remember.
M:50 H:52 S28 (my S from previous marriage) M:17 + 3 BD: 06/12 S: 06/12 - H works in another state