Looking for a story

I'm looking for a story I read ages ago was about a ex space corp marine who's planet was attacked by space pirates, and thinking his family was killed he went looking for revenge. He was captured by pirates and put in a medical pod, an changed to a female, a cple things happened and the pirates were put in some and ended up being turned into young girls, who saw the older women as their mum. I remember that her sister was alive and she hired a governess who ended up opening a school. But that's about all I can remember I just don't know what it's called.