It might sound like wishful thing and probably is. The reason I brought it up was because my wife "normally" was very methodical and is a voracious reader. Our house is full of books we've bought to deal with issues from breast feeding to health issues and troubled teens. It would not surprise me at all if she had a lucid/ second guessing moment she might just check out the "self help" rack at the local Starbucks/Chapters bookstore, which the kids tell me she visits weekly ( she takes them out for coffee and treats).
We both did the "going dark' early on, which I know was genuine pain and not DB, now it's at the "Act as if" stage where we talk at one another like everything's fine, best face on it, make eye contact etc., but keep conversation short. It's all very strange.