Wife is indulged in adultery but refusing to divorce what can be done

We have been married for 9.5 years and we don't have any children. I am a central govt. servant and my wife has lived with me always. She never got along with my mother over the years. her name has been associated with many men over the years. she does not like cooking and we have always had a maid at home. over the years I lost respect for her. even before marriage she had an affair. She had a missed abortion in 2015. In august 2015 I got in touch with my ex girlfriend and we had an affair (she is married too). out of this affair a child was born in may 2016. she has my confession on record. she refused divorce and says she cannot live without me. she then had an affair with a senior of mine and I caught them in the guest room recently ( I planned and went with my father and friend) in the recording the said man is in clothes ( but not on bed ) and she is under a blanket . Now again I am asking for divorce and she says she cannot do it.