This has potential, but the phases of corruption need to be controlled better. It is too easy to skip stages of corruption and just end up with a fully corrupted prisoner without seeing the intermediate phases. There should only be one stage of corruption at most allowed per turn.
These are the main ones. Here are some more general suggestions:
1. You might want to add a note that you can still use fully converted female prisoners for creating new monsters, once a female prisoner has been fully converted.
2. There should be an option to alter the chance of a defeated enemy being converted. I, and I'm sure others as well, would like the option to make it 100%, similar to zombie movies and other such horror stories that this game is clearly based on. There is a mod to make it 100%, but that is per attack, and I'm wondering if there could be an option for only defeated enemies to be converted afterwards.
3. It would be useful to be able to know in advance who is attacking, in order to strategize better.
4. It might help the game to have the option to directly sexually interact with the female prisoners at earlier stages of corruption, rather than just the final stage. It would help add to the sense of story progression, as well as being interesting in their own right.