Pressure of wife relative

My friend married in 30/04/2015. Since marriage their mother in law and another relative trying to interfeare in their family matter but their wife does not support them. In march 2018 both become parent of sun. From these day his mother in law and her relative increase their expectation and gives mentally pressure on my friend. In this way on 11 may 2018 when he go to take back his wife after delevery, her relative insult and not send his wife, on 12 may 2018. His wife go to her relative marriage ceremony even with 2 month child. In this marriage ceremony wife's ten to tweles relative attack on my friend their mother and sister, after these incidence he go to police station but his wife make complaint against him. Actually he was victim in this incidence wife away from beating. If he make complaint against wifes relative then wife also ready to make false complaint of 498A. Then he trying to take back wife on 28 may 18, wife does not come again insulted her relatives. After this three incidence my friend shocked and undergoes depression, trying to sucide, because he can't accept, his wife can win on them. I am trying to gives moral support them. Is there any legal solution on it...?