Thanks for your answer, I`ll check the tips about the strengths and tutor skills. It would be helpful if we had numbers on the progression of the slaver skills.For strength not to come down, you need at least "good food". For you to decide if it's worth your money. You can also do some sparing in the colosseum against opponents that aren't too week for you to sweat a bit (the winning description will tell you if it was good for your strength).
About tutor skill, it's difficult to know just from your number of days... It's how you act these days that matter. Also, try to give lessons that are around your level of skill in the area (if you are a B+ musician, give music lesson to a slave at C+ music level).
About Domini Dictum not lowering pride, I assume it's on purpose. Your slave blanked out magically, you did not made her yield to your authority. We can debate about it whether or not that makes sense.
About Domini Dictum, it only doesnt work on shameful podium and naked walk, Seems strange, For example Public use does reduce pride.