Hey AD, With respect to your analysis, if you want to really differentiate, only analyze yourself, not your W. Unless you ask her and/or she tells you what is going on inside her, you do not know. You can note behavior change that you see. All else, such as feelings, motivations, thought processes, is pure speculation on your or anyone else's part.
Has your wife ever asked you to talk to *her* about what's going on with her? If I were her, I would've. Only she can teach you about her. I expect you will develop a deep intimacy and learn much about her, if she speaks for herself.
I think you are definitely on the right track with yourself. Glad you found something that seems to work for you!
Best wishes, MPT, who reads and posts too sporadically to be paid much attention to