All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
The problems that might happen between a husband and his wife is a great affliction, and everyone should know that keeping good relations with the in-laws is something Islamicly required. Therefore, one should be keen on achieving this as a way of following the example of the Prophet who used to keep good relations with his in-laws.
We advise you to be patient and wise and you should endeavour to reconcile between your wife and your family. You should observe the right of each one of them and repel the harm of each one from the other. Furthermore, you are not allowed to force your wife to visit your family if she is harmed by doing so, and she is not obliged to obey you in such a matter. However, if she can obey you and visit your family with you and be patient over the harm that she may face from them, then this is a good thing for which she will be rewarded. This is something that may increase the affection between you and her.
The wife should know the great status of her husband and that in Islamic Law he is her protector and provider. Allaah Says (what means): {Men are in charge of women by [right of] what Allah has given one over the other and what they spend [for maintenance] from their wealth.}[Quran 4:34] Therefore, she is not permitted to raise her voice over him or to hit him and the like, and this is considered disobedience and ill-conduct from her. If she does not stop this, then her husband may follow the religious steps in dealing with a disobedient wife; for more benefit, please refer to Fataawa 89480 and 85402.
Indeed you did well by inviting your father in-law the (father of your wife) and being patient with him, and this is among the characteristics of generous men. If your wife is not patient with your family, then you should be patient with her family just for seeking the Pleasure of Allaah and being kind to your in-laws.
Allaah Knows best.