I admit I have not read all of your sitch since I had been consumed with mine earlier on and I am now sort of detaching from this site some, but this is my .02.
I know you run as well as write, but what have you done differently GAL and 180's that you didn't do prior to you sitch? Does your W have her own career and have the opportunity to self actualize?
Your W has the responsbility of being a mother as well as a W, which puts a lot of pressure on her and IMO the spouse begins to loose herslef/himself. It also happens to men as well and so I think often times this is the beginning of a WAS in rebelling the "life closing in on me" feeling. Do you both have time to do an independent activity for personal growth? Pin I know you run and write what does your W do? Maybe your W needs to GAL?
The reason why I ask is because in reading your posts I see "family game night" "friday takeout night", etc and it seems rather structured and maybe it feels too confining to her. IDK, however I do know that we only get one side of the story with regard to these posts and I am a firm believer that both sides contribute to the good and bad of a M.