How could they have been married for several years and he didn't know? How did he find out? I can see how he would be angry at the deception, but if he loved her after several years of marriage, would that not have made a difference? Afterall, it is the inner person you love not the outer shell, I tend to think if you go so far as having a full on sex change then perhaps you really are a male suck in a female body and vice versa, so really the inner person was just getting a matching body. Perhaps that is a bit of a simplistic cut and dry way of looking at things, but it is how I see it. He could just have left her rather than killing her.