Is taking one's wife to live in the city considered an act of disobedience if the mother, who is capable of taking care of herself, objects, given her need for the wife's service in the countryside and on the farm?

It is obligatory to obey the mother in her request for the wife to serve her, if the wife is content with serving her and staying with her, and the husband does not fear falling into the forbidden. However, if the wife refuses to serve the husband's mother or requests independence, she is not obligated to do so, and there is no blame upon the husband for taking her with him, especially if he needs her to protect himself from the forbidden. The son can financially assist his mother so that she can seek help from others.