Legal Question in Family Law in India

At first take her to a psychiatrist and ensure that she is taking medicines as per Dr's direction.This type of psychiatric patients are reluctant to take medicines, it is the duty of others in family to ensure this.

After having a child and after four and half years, it is not so good. just take her to an experienced Psychiatrist preferably with a senior Psychiatrist in Govr. Health Service, since they are dealing with a number of patients and they can treat the ailments effectively.

Further it is inhuman thinking about divorce at this point.

You need to be patient and kind to her. You should not abandon her in this way, it is inhuman on your part to do so.

If everything fails, then you may seek for divorce and seek custody of child from family court, you should get it.