The problem is a consistent one and hence you should have told them before marrying her. She will probably take medication for the rest of her life. Try to negotiate with them. But it is upto them now how to take this issue. 

Share with them the reports and let them decide.

Since this marriage could be finalized only on account of concealment of the mental condition of the girl(wife), it can be said that the grooms consent for marriage was sought by fraud. It is better to proceed for mutual divorce or annulment of marriage as the groom side are in a good position to fight for their rights.   

First of all Schizophrenia is not at all a disease which is incurable, hence suppression of the fact of this disease existing in the bride before marriage is not a material fact for marriage, therefore it cannot be considered as an act of cheating.

The police cannot interfere in this matrimonial dispute.

The groom cannot approach court with a petition seeking annulment of marriage on this ground.

He is not eligible to file divorce within one year from the date of marriage.

This disease cannot be held as a valid ground for divorce on the grounds of cruelty as well.

Hence if the groom side is threatening to take any action on this, you can challenge them properly  and for now you can ask them to adjust and live because this is a curable disease and she can become alright in the passage of time. 

If they still insist on the same issue, then your niece can take action agaisnt them by lodging a criminal complaint with the police for harassment and acts of cruelty.

A mutual consent divorce petition can be filed immediately and within a week the divorce can be finalized by waiving of the cooling off period. This can be done by giving an application.

You should immediately file a petition. The divorce would be granted within a week.

Schizophrenia, the illness can be successfully treated and managed. The key is to have a strong support system in place and get the right treatment and self-help for your needs.

Schizophrenia requires lifelong treatment, even when symptoms have subsided. Treatment with medications and psycho social  therapy can help manage the condition. In some cases, hospitalization may be needed.

 Temporary ill-health including schizophrenia, a mental illness, which is curable, cannot be a ground for divorce under Section 13 (1) (iii) of the HMA, 1955.

Supreme court has held that

 Under Hindu law, marriage is an institution, a meeting of two hearts and minds and is something that cannot be taken lightly.”

Marriage is highly revered in India and we are a nation that prides itself on the strong foundation of our marriages, come hell or high water, rain or sunshine…” The partners “must weather storms and embrace sunshine with equanimity. Any person may have bad health, this is not their fault and most times, it is not within their control

It was further held that 

“Schizophrenia is a treatable, manageable disease, which can be put on a par with hypertension and diabetes,

Mental illness of a person itself is not a ground for divorce; according to law, if a person has mental disorder of a kind that the spouse cannot be reasonably be expected to live with them, then divorce may be granted

In India, divorce can be obtained only on fault grounds -- the person who approaches court has to show some fault of the other, unless both parties mutually agree to separation. So exaggeration is common in cases of divorce. Whether a person has mental illness to the extent that warrants dissolution of marriage is subject to trial, which is a safeguard. The court will examine whether the person with mental illness is capable of leading a married life.

Thus the law is not in ther favor even if they are threatening you with some criminal cases.

The police will not entertain their complaint on the grounds of cheating when the law itself is not recognizing this as an act of cheating.

You people can remain stubborn  and do not react or respond to their allegations or provocative statements.

You can challenge them if they approach court because courts will not entertain any cae that may be filed by them in this regard.

Dear Sir,

1) It has been held by Supreme Court that,Schizophrenia is a treatable, manageable disease, which can be put on a par with hypertension and diabetes.

2) You should try to negotiate with the other party and make them understand even though it was hidden, the disease is treatable and the girl had recovered from the same since 4 yrs showing no symptoms.

3) If the other party is adamant to take divorce immediately, you should file file mutual consent divorce, but the groom will have to wait for one year before they can file the same.

4) You can tell them this is not ground for annulment of marriage on basis f the Supreme court judgement.

Thank you

Dear Querist

Hiding information of the previous history is not an offence so there is no need to worry about any criminal legal action against you.

he may file annulment petition based on the fraud before the family court and nothing else.

Feel Free to Call

Refuse to agree for divorce 

You can get divorce only after expiry of one year of marriage 

if they file any case contest it 

It would not affect your government job 

no case is made out against you 

your sister was under medical treatment and was perfectly fine 

- Even the same is known by her husband , but if he is not having the proofs of the same, then she can lodge a complaint against him for the said happening with her. 

- Further , she can file complaint against her husband under the provision of domestic violence Act and can claim maintenance and residential right from her husband. 

- Further, if her husband is having proof against her mental problems , then why he is asking for divorce from her , he can declared the marriage null and void on this ground legally. 

- Such FIR against wife not maintainable. Police cannot involve on this issue .

- She should take legal action against him .

You can contact with me , if detail suggestion needed. 

Hey,

Since there was suppression of material facts to obtain the consent of the groom for marriage, there is a good ground for the guy to get the marriage annulled. Since you have done these acts, a criminal case of cheating and criminal breach of trust can also be made out against you all. So, best is settle it with mutual consent divorce and negotiate the settlement amount and the terms of the agreement. 

1. No FIR is made out for this but if a FIR gets registered against you then immediately apply for anticipatory bail lest police arrests you.

2. However, this is a ground for annulment of marriage as consent to marriage has been obtained by suppression of her medical history.

Divorce can be filed only after one year from marriage.

You must explain the above position t0 them; and until the marriage becomes one year old, you could get the girl back to your home. 

I do not see you landing in any legal soup since you guys are ready for divorce.