If your W was receptive to the article, then great! If you really spend some time reading a variety of situations you will sort of see a trend that *most* WAS's are not receptive to books, articles or websites. If your W was then it was a gamble worth taking.
IMO the most beneficial and profound realizations come from within and not a third party pointing it out. If it worked out another way for you and your W, or, gave you a new starting point to work on the R in a new way then I don't get why you are so angry.
You said your W seems more open to you at this time. What will you do to keep this positive momentum going? What do you plan to work on for you and in the R? How do you think you will handle it (even if just to yourself) when your W spends time with her friends? I don't feel those are unreasonable questions to ponder.
I agree this slight turnaround happened quickly. So, just to prepare yourself you might want to expect a bit of a pullback on her part.
All we can ALL do is learn from our mistakes and do our best not to repeat them. If you are doing that, then wonderful! If your situation is in the minority that certain gestures panned out how you hoped (ex. giving her an article) then be pleased, not angry!
