Women who have raised sons and give them all my love, it is difficult to take into account that his young beloved son pays much more of his time than mothers. Young wife should remind my husband that we should go on a visit to her mother or call to find out how things were going. Better if the husband's mother will see that the initiative comes from daughter - this will increase its credibility in the eyes of her mother in law.
Often in-law begins to intuitively perceive the daughter as a rival. It is not necessary to inflate the conflict on this ground. It is better to gently persuade gradually in-law that you have with her one goal - to make her son happy. If you are sincere in this matter, sooner or later she will appreciate your efforts.
In no case can not bring the conflict starts to open hostility, even if the truth is on your side. Take the first step towards do not show their resentment, if only because you are younger.
If you had a falling out over something my husband and I do not complain in-law to him. Come to her for advice, describe the situation, tell you something was wrong. In this case, it will not feel guilty for bad parenting, but simply give good advice, knowing his son better than you, as familiar with them from birth.
Staying in his opinion, every time I try to listen to sermons in-law. So you will be able to demonstrate their education, and what to do - decide later.
Never complain to her husband on his mother, to the good it will not, but can play a disservice. Sometimes some hasty statement by someone from relatives or friends can be heard your mother-in that subsequently worsen your relationship. The habit of not discussing relatives spouse uniquely help you gain the respect of your mother in law.