I really liked this game, except for the main character's mother, who looks too young, and the worst is the contrast with her and that horrible model that dev chose to be the MC's father, you wonder how on earth such a beautiful and young woman ends up with such a horrible guy. (which leads you to not so nice conclusions about the mother's interests)...
So I don't think I'm pursuing any relationship with the girls in that family, (weird isn't it?)
I didn't care for the sister, and the mother is beautiful, but she looks more like a sister too young. An opportunity to have a beautiful grown-up lady there, wasted.
Other than that I liked everything else about the game.
Edit: A well I see that the dev has already said several times that there will be no love affairs with the mother, but only with the sister. So there's no fucking reason to make her so beautiful, she could have been like Charley's aunt, and no one would have minded if she wasn't a love interest.
Well anyway, I'm not interested in the sister either, so that long awaited trip to home will be very boring.