My wife will does the exact same thing! I first noticed it when she asked my opinion on what to name the plant she received as a gift. I said Frank, to which she replied, "No, I think Fred". I'm not sure why she does it and when I asked her about it she wasn't entirely sure why does it either. I think it's just that she wants to know that I care enough about things in our life to have an opinion on them.
Part of my New Years resolution to be a better father/ husband. I figure if I surprise her with something every day (in a positive way) ill be off to a good start.. I think it's just that she wants to know that I care enough about things in our life to have an opinion on them.
I think you're onto something here, my wife refers to it as "participating". I think it's her way of making sure I am present and engaged in what we are doing. Something I'm always striving to be better at. Speaking of which, she's just pulling up the drive and I've made her this:
Wow, that looks amazing! Tofu? And kale? Super yummy, I bet. That's a great resolution, one that will reap many rewards for all parties involved.