First off, choice is somewhat of an illusion in this game. The story doesn't progress until you hit the right number of points. You won't see any new Mom scenes until you have the requisite domination points. Are you guys playing this or not? There's no way to even be talking about the new scenes unless you raped the blonde. So you've already engaged in rape content, you couldn't have seen them otherwise. I don't see the point of pretending you didn't, other than liking to wave your finger at others.
There is really no way to twist Bobby into a good person, it's not who the character is (nor does it fit the gameplay loop, manipulation IS the gameplay.) Love route would be pointless and a huge time sink for the dev, you'd have to redo almost everything to never show manipulation. This is clearly in the vein of Incest Story and Milf's Control (great games, though this one's really rough around the edges, programming and interface-wise.) You are a shota who does whatever it takes to turn your family into sex slaves. As written, they'd be too disgusted by incest to fuck Bobby any other way.