@Ozygator the lessons were supposed to be a way of increasing stats with the mom. I've build a stats system, but there needs to be a way of controlling them before I can use them as a requirement for starting/advancing certain plot lines. It's definitely a bug and I'll fix it in the next release.
As for the character age vs. space training thing, it's supposed to be a big military research station, artificial gravity, etc. so the staff is there with their families. But yeah - early 20's is what I'm aiming for - no less than 18 for sure
. This means that the mom is early 40's, which I think is achieved in the latest render. My initial plan was for the sister to be late 20's (being not related to the mother), but I guess most of the people see her as being past that age (both here and judging from the messages I got on Patreon), so if I have to change that, I prefer to do it as early as possible.
Anyway thanks for your feedback and be assured that I'll try to keep it as plausible as I can regarding sex. That's why there are no sex scenes in the first two versions, but I don't intend to keep dragging that forever (in v0.3 we'll break some boundaries between the player and his step sis and with the new character, there will not be the barrier of loosing the father so recently).