So, I just finished playing this. I got my rep with Mom up to 50, but getting the sisters' rep up was much harder. So far as I can tell, you can only raise rep with them by attending meals for a max of 3 per day for all three family members. Unfortunately, I ended up receiving a drain of 2 rep per day after a couple of weeks. This means your net increase is 1 rep/day.
Roughly speaking, each stage with your lust interest/family member increases by 5 for every one you complete. However, I could not find a way to get the +15 influence scenes to trigger for either sister. I got Mom's stage to 50 (I think), but at that point it also required me to have been introduced to a gang.
Gang? What gang? I saw the gang category in the stats, but I haven't even heard of one in-game. Also, the MC's progress hit a brick wall with some text from the author stating that if you see that message, you're either at the end of what is available, or there's some sort of issue. All I can say is that my progress appears blocked for all 3 women. This is unfortunate because the version number (1.03) made me think that the game was largely completed/released. But it appears that the author didn't follow that convention with his revision scheme.
Lastly, there's the issue with the MILFs that you can lay some pipe with. It indicates that you can get them up to 3/3 through repeating screwings. But what does that do? Does it have any effect at all other than a money maker? And what *are* we supposed to spend our money on? I haven't seen a single item for sale or anything that could be bought.
I just find the state of this game to be incomplete in a lot of ways, which is frustrating. I like their style and slutty personalities. I was hoping to be able to bang them all in the most depraved manner possible, but that doesn't appear possible, at least not in the near future.
Such a shame. I hope Fallen Angel gets around to finishing this someday.