I know someone who teaches Hil. Shabbos her husband asks her questions in Hil Shabbos. I know s/o else who had already learned certain topics in halacha that her husband hadn’t learned yet (he was going to get semicha but hadn’t yet), so when they first got married (until he got semicha), he asked her.
If halacha (or certain areas in halacha) is the wife’s “tchum” & her husband’s is something else, I wouldn’t think that he should have a problem asking him her questions since he knows that’s her area. Just like if she’s a doctor, he shouldn’t mind asking her his medical questions.
But these things are very individual & depend on the individuals As a single girl, I have spent time in many people’s houses, & I see that there are all dif. types of people & ways of doing things.
The imp. thing is for the wife to make sure she is aware of HER husband’s needs & to act accordingly, even if it’s not what she expected.