Dissolution of marriage under Section 13(1)(ia) of HMA Act

Dear Sir, About eight years ago in 2008, we searched a life partner for our elder son through a website i.e. “Punjabi Bharatmatrimony.com”. The bride-girl belongs to Sonepat, Haryana and not of our caste. Their marriage was consummated on March 9, 2008 and the parties cohabited as husband and wife at the matrimonial home in Delhi. After few days, the bride girl started harassing her husband and in-laws. Our son tolerated all her undesired behaviour and actions presuming that she is new and will adjust, acclimatized herself after passage of sometime, but she did not show any improvement. Out of the wedlock, one male child was born named Master Harshal Rajput on 14th September, 2009. He is now aged about 7 years and 4 months and presently studying in second standard. Presently they are living separately from us on a tenanted premise in Rohini since September, 2015. Whenever our son comes to meet us she takes quarrel with him and mentally tortures him. Please advise whether our son can take divorce u/s 13(1)(ia) of HMA Act from his wife on the ground of cruelty?