I think you have to be careful how you define a “Rav”. A lot of people have thoughts on Torah subjects, but you must know from whom you are getting your information.
A woman is not responsible for her husband’s mitzvah observance, not the positives or the negatives, unless she is serving him something with bugs in it, but then he is onus (did it without wanting to) and she is at fault.
A marital advisor I heard speak said that the wife is not supposed to get involved with what minyan her husband goes to (or whether he goes to minyan at all), whether he sits and learns, etc. All she can do is daven that he want to do the mitzvahs and come closer to Hashem. She can create an environment of wanting to grow and going to learn, showing a desire to change, but she is not responsible for him. As stated above, a person is only responsible for him/herself, no one else.
This is one of the reasons why it is very important for a person in shidduchim to make sure that the person they are dating has similar values of growth and general mitzvah observance as they do. It is not so easy to change these things after marriage.