Emotional Blackmails / Constants Threats to commit suicide

I got married around 6 years 8 months before (love marriage). No Kids. Living in Bangalore (only we two). Her Mother is living in UP along with her Bother (she lost her father post marriage). & my Parents are also in UP. My wife is short tempered, over emotional, possessive, inexorable, over thinker, addictive trader and always play victim card. On financial part, she has done hefty losses in past 3-4 years. During this period she keeps on telling a lie about quitting trading. Borrowed money from family members, friends and financial institutions. Steal my savings, along with regular pocket money which i gave to her. Now her EMIs are almost double of her salary. On Personal & Mental part, She always complains, Does not want to adjust. During any heated argument if i say that i will leave her, she starts emotional blackmailing. Start hurting her self. Even attempted for suicide many times. Recently she took 3-4 tablets (grains prevention). Previously also threatens for Fan / terrace / phenol etc. Sometimes she also says that she will make mine (along with my parents) life hell & will put all blames on me only. Exaggeration of any small topic, Shouting, Screaming, Yelling, Crying, Misbehaving is very common in my house. Sometimes i have also said bad/abusive things in anger. But its always two way. she never stay quite during a fight as well as after the fight. I am fed up and deeply disturbed with all these tantrums. so I was thinking to discuss one last time before proceeding for Divorce or any other legal activity. Since she may attempt to suicide / hurt herself so i was thinking to ask her mother (and myne as well) to come here & discuss. Please suggest how to proceed here ? Calling her parents will be a good idea ? shall i involve others (non family members) as well in this discussion?