She said that the fact that I am talking about 5LL's and acting like I am some expert just bugged her.
I too made comments to W about relationship stuff I was reading early in our sitch. Why wouldn't I? We always shared everything between us, no secrets.
Well, she pretty much said the same as your W... "Just cuz you read something in a book doesn't mean it's going to work". and "Great, maybe that'll help you in your next relationship".
So yeah, like you, I also learned it's best to keep the "How we can fix things" talks to myself. She's done, remember? (for now, anyways)
Our job is to apply no pressure.
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl