Is the failure to meet the requests of a wife, who links them to the love of Allah and His Messenger, considered a sin or an indication of a lack of love?

It appears the wife is using her husband's love for Allah and His Messenger to entice him into fulfilling her demands, misleading him into believing that non-compliance indicates a lack of love for Allah and His Messenger. It seems there is no blame upon him for not fulfilling her request, and this does not indicate a lack of love for Allah and His Messenger.