My daughter want divorce having one son one year old only two years live together. Can you advice me how to get divorce.

Due to some personal issue i am apply divorse with my wife is it ???????

To be honest I already told her many times that I want to get seperated but she says that she has not thought about it and it she is dragging it so that she gets money from me every month nor we have marriage certificate nor any legal docs she wants me to take the initiative for seperation and her decisions is been taken by her mom and brother just imagine 17+ yrs of marriage and not stayed together even for 6 months

i am married for 20 years and have a 13 year old daughter, there is no physical connection with my wife for the last 10 years. i have got into a relationship twice in last 8 years. the first one didn't go through. i am in my 2nd relation now which i want to take it ahead for the rest of my life. my wife knew my first relationship and she has a doubt about my 2nd relation. considering the non cooperation in house hold activities and marital responsibilities , i decided to call it quits and asked for divorce and she is adamant, not willing to give divorce saying that if she divorces me i will remarry and it should not happen as i should suffer as she so also suffering. my parents and her parents tried their level best to patch up, but in vain. i am staying alone separately from a year. what should be next step in trying for mutual consent for the divorce?