thanks for the translation, it was very nice. I concur with Wolvenworks that the line when the Demon Lord mentions her being a coward it feels weird, since she seems to say it in response to the slime, though rereading a bit helps you understand the person she's refering to (and also knowing the slime was insistent on getting the hero and assimilating the princess, so she wouldn't be buddy-buddy with her at this point in time).
but rip, Satan's Secretary was done before the 3 day window on the server move, so I can't read it RN x_x