I guess you don't know the meaning of the word "forgiveness" or either "realization" or yet another word "atoning".
DS's realization and atoning began a long time back when J-G's wedding was called off by all the panch's of 3 villages. Did you miss all those episodes ?
This is not your typical "once a vamp always a vamp" show. Here people have myriad shades of grey and no one is pure white or black. There are very strong, well etched characters here who are all evolving.