Also the amount of stress gain, a pregnancy or the milk production during the pregnancy seems to add up every day, resulting in some high numbers on the report. But the stress factor in the interaction menu only rises up to 55-60% of the bar, despite having a mental breakdown every day.
Edit: The slave agreed to impregnition and the nursery was build during the pregnancy.
The slave is also the starter servant as foster sister, but doesn't want to talk about incest in the fetish section.