If she dies before her 32 years and him the 25 years then I don`t think it is too long. However if they live longer then I think the sentences aren`t severe enough.
Sadism is horrendous and these sadists put this man through total purgatory. I`m not interested in any stupid excuses such as anger problems or any other  such twaddle.They systematically tortured and then killed a human being and I reckon they deserve everything they get.