What is the percentage of getting divorce from wife based on mental cruelty?

Its a marriage dispute. I am not sure what my wife want actually. Sometimes I feel she ddidn't want to marry me and because of some pressure she did the same. Sometimes I feel, she having some mental issue. She always telling me to maintain distance from my family members. Not directly but she trying to ignore my mother and always tried to create scene with my mother. There parents also helping her to do and sometimes they called me told me to leave my family members and just stay with his/her daughter. After 9 month of stressful & pathetic situation somehow I escaped from my wife. From last 8 months, she is staying with her family. Her family keep on trying to send her back but I am not ready bring her back because of past experiences. I don't have trust on her and her family. Me and my mother gone through with unforgettable stress and mental torture. So I want to get divorce from her. I read few articles and found that its very difficult to get divorce if girl say no. Please share your thought.