I believe you are in the Last Resort Technique. Since what you resist persists...you need to not try to talk her out of this. It may feel counterintuitive.
I think the compliments aren't working because she wants a different APPROACH from you.
You task--finding out what works for her to trigger the attraction. Who else is she attracted to (stars, for example). It might not be super easy for you to figure this out, but she has left clues throughout your marriage. Dig deep.
I don't always agree with some of the folks on the board who talk about what makes a man attractive--because it doesn't work for all or necessarily most women. I think it IS what YOUR wife is looking for. That 'it' factor.
Check out DENVER 2010's threads, seek advice from JackThreeBeans (I'll alert him) and sandi2. You'll be steered in the right direction.