As for your dead slave, couldn't you recover him/her through your most recent autosave? There should be three of them.
As last resort, you could open an old save, copy the code portion relative to your slave and past it into your current save.
Viewing post in my sugestions - gui/gameplay
I moved on, it is shame, but it happen. and here comes another idea, you should learn speel resurection for obvious use...or use for that services of some witch/shaman, which unlock after doing some mission for him.
And with this comed my idea which i wanted to polst elsewhere - currenty we have here only child/teen/adult age, and i think it is time to add another one - old. for obvious reason :). and with that can come another sideline plot - you will find old hag, which telly ou that she is cursed beautifull princes and if you fullfil mission for her, you will break curse...and last mission will be of course sex with her...only to discover she lied to you and she is only just genuine old hag, and tricked you to sex and doing jobs for her.