This SUICIDE matter is a very very delicate topic.-----
One has to tread very carefully even in suggesting an option and way ----
The very first thing I would suggest is that you try to bring LIFE back into the MARRIAGE.--- where there is a will, there is a way.--- Taking her for an outing, Gifts, etc etc etc there are many methods to make Love Bloom.---- Do not laugh or mock --- It is LIFE and she is your WIFE --- So, tread carefully -----
Husband and Wife relationship is not a joke ---- Divorces might happen, but that is still not even TEN percent of the population opting for separation and/ or divorce.----
Technically,
To have the counsellor's report is one safety measure -----
Second thing is to identify the suicide helpline authority and further to their counselling, get a report from them -----
Third thing is to file a complaint at the local police station that you are being threatened since a threat to commit suicide is also criminal intimidation and the IPC in India has a few sections dedicated to intimidations.----
When you complete the third activity, in all probabilities, your wife and her parents will release their EGO as a BEAST and go all out to TRAP you within their MIND.
So, you have to be ready with money, details of advocates, anticipatory bail details and a MIND-SET to fight it out for a few years in the courts.
But it might not happen too....So, quickly the fourth activity is to involve some community seniors and relatives to counsel.----
Now, once you have ample evidence to show that you have taken all steps to keep the marriage alive and relatives and counsellors too have played their part and yet the marriage has reached a breaking point, irretrievable, then, the ground for divorce is set ----
Since she is unwilling to divorce you, Mutual Consent Divorce seems to be ruled out..----
Regular Divorce would go on for years --- So much of mental strain, financial strain, imbalance in life, time, money and energy ---- THINK ABOUT IT ---
WHATEVER YOU DO, THINK OF YOUR FUTURE-----