Let me first say that this VN is awesome! Not really a game, so perhaps unless the choices really matter, you could just remove them and let us enjoy the ride.
I am LOVING the visuals, and this is perhaps the first VN I've seen that has such nicely designed animations. Smooth and hot. I am also loving the pacing. It's not too slow or too fast, with just enough teasing and actual story to not make it seem like it's purposefully being dragged out to get to the hot stuff.
Personally, I am of the opinion that when it comes to these taboo things, it's best, to be honest, and upfront, so I am hoping that the cool aunt will just push MC forward, approaching the topless ladies, and confronting mom to accept what is going on. And based on the previews of Rachel, it seems the whole fam will be DTF. LOL