I understand how a job can change your dynamic. Ever since my wife and I got together I've been in and out of work and we would drift apart the times I wasn't working as all I had to talk about was housework and kids. I too didn't truly understand the intangible value of working v not working. Now that I'm back working I feel a whole lot better and appreciate time with my wife and kids more even if my wife would rather do her own thing and the kids would rather watch cartoons. I struggle with the praise myself but it sounds like you're boosting her ego which would be a good thing if it is.
Me: 31, W: 29 T: 4 M: 2 Kids: 3 (SS: 7, SD: 4, D: 3) Separated, still living together: Nov 2013 Separate bedrooms: Feb 2014 W working away; kids with me: Nov 2014