nullity and void

I got married in the year 2018. my wife who used to say before the marriage that my parents should live with us started saying they shouldn't come with us after the marriage. she is very possessive. she had cut herself just cause I had phoned my sister. where MLC was filed by hospital stating "self inflicted over dispute". once my dad shifted to our home she started threatening me saying she will kill herself and that we are giving her mental torture and so on. once she had even tried to kill me. once I had taken her to the psychiatrist, but she refused to continue her medicine saying she's proper. I have some call records and a pic before the marriage what she had sent me through whatsApp, where she had cut herself on her hand. cause of her and her moms fight. I'm not able to control her. how to get divorce in these situation. (I'm Christan)