This game is really solid, I really enjoyed what I played and glad that I found it a couple days ago.
For dev:
One kind of grammar thing I found that could be fixed
After Sex with Jennifer, you end up in room Locked up with your three other daughters, then you leave room, and get separted from them, but Jennifer says " Your dad" in part of one of the sentences, which felt weird, since they know she is our daughter at that point so I think it should just be "dad" minor gripe, but figure I would point out.
Also for dev,
badbod ,
2 suggestions/questions.
-Will there maybe be a point when a girl wears a strapon and helps out, like Sam and you or another combo on one of the daughters, or sister etc.
-Second will there maybe be some sort of bdsm, doesn't have to be extremely hard, but maybe one of the daughters is into that, so maybe some paddling, tying them up, etc.
You don't have to answer if you want to keep surprises, either way, and if those things aren't planned totally understand, I respect your story and decisions. Really loving your work though.