The
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is out of date but still generally correct and useful. Raising stats like Nature and Temperament can take a long time, which is good in my opinion. These stats can still be raised while a slave is acting as an assistant, which is pretty convenient for reaching the higher levels if needed, as they require more and more points as the stat level increases. There are a few traps for certain stats, such as keeping behave
et or fiend milking (affects assistant too, beware!). I find the changes that have been made recently that affect stats are quite in line with the spirit of the game.
They key to using rewards is to trick your slave into feeling that they have done something worthwhile. The easiest way is to cast the
Sententia veritas spell and then have her do something that you know she will not reject. If your magic skill is low and that's not possible, she will feel more worthy of a reward for doing something unusual, such as switching to sexual training after a week of non sexual training. It will be more successful if she's in a good mood and wearing clothes that help that sort of training.
It took me a while to get the hang of stats. They affect a lot of aspects, such as obedience. It is much more difficult to gain obedience if a slave starts out with high nature and temperament.
tldr: teach her how to fight, and win some matches in the arena, it will increase both Nature and Temperament.