Well, literally the developer doesn't have to "kill" his game, he can go back and start writing the script / story where it was good. I was really enjoying the game at one point, I started to think about how I was being wronged, but when we got to Paul's part when he takes Jessie to the mall, then everything went bad and non sense and then the story got worse, the blackmail was too forced and there was no point in it. There is still time to correct, of course it will take a long time, or else continue and even reach a point of wanting to abandon. I think it's much better that developers try to run after it than abandon it, because the game has potential, but your biggest enemy will be creativity, because honestly I think it a little difficult to create a game with a female protagonist that looks good in a story to play. Of course, it's not something impossible.
I disagree with a lot of what you said... the fact that its a Female Protagonist in an INCEST game, gives it near infinite potential !! The scene in the mall with Paul was HOT !!
Remember this isnt NTR, as the player your seeing things from Jessie's view... This is no different than say... the attractive kid from Milfy City banging those two ugly twins, instead of Linda or Caroline...do you consider that NTR ? Probably not, so Jessie getting licked by Paul was fine too !
What most of us are complaining about, is that its going the predictable way of "blackmail, and forced" trash that is prevalent in almost EVERY SINGLE Fem-protag game. When Jessie could have just acted like a male MC, and go around the town banging who SHE WANTED... She had so many options, starting with her son and daughter, Paul who she admitted she liked before he did a 180 and became blackmailing garbage, and her daughter's boyfriend.
The dev could have added more people to, that most of us wouldnt have minded... her boss at work could have been a NICE GUY, an attractive male model (instead of fat, old, stereotypical black, etc)... and Jessie being the sexually frustrated gal that she is, could have flirted, slowly worked her way into the boss's pants... Again so many opportunities... that young recently graduated doctor who is giving her a check-up ? Yes please ! The Lifeguard at the country club pool ? Yes please ! The salesperson at her favorite clothing boutique ? Yes please ! And they could be any gender, male or female !! Again near infinite potential !