You really don't have to apologize,
@jacktrail, but I do appreciate that you have; likewise, I am deeply sorry for being as curt as I was with you... so, please, forgive me for that.
Been under a bit of stress around here and up to my bushy eyebrows in trying to get our next release done, so I haven't been taking the kind of time that I should in my replies and my [rather short] fuse seems to get easily lit right now... and I should've worded my reply to you much better than I did, while clearing up the misunderstanding about the level of 'bestiality' that was mentioned in our game.
I understand that people have lines that they don't want to cross while playing games and enjoying themselves... I have my own that I won't cross, I might toe the line a bit... but won't cross them, so I can understand when people reach an area within our game that might make them uncomfortable or unhappy... and may not desire to finish our game as a result of that.
As
@DA22 states above my post (thanks for the help, my friend) the scene that upset you was done to show the audience, and prove to the MC, that the MC had very little knowledge about the activities that were going on in his own family... that his 'perfect' vision of his wife and kids, their level of 'innocence' wasn't what he imagined and was only perceived by him, but not the reality at all.
As the writer, it was important to 'shock' both the audience and the MC out of the impression that he was living this 'perfect' life and that his daughter wasn't the 'perfect little angel' or 'innocent flower' that he believed her to be... it needed to be done quickly and leave an emotional impact on both the character and the players (like tearing a Bandaid off) where there would be surprise, pain and a sickening feeling where you didn't really want to look at the wound under it, but a morbid sense of curiosity and concern would keep you from not being able to look...
I had initially toyed with the idea of a scene where the Player caught her masturbating or one where her boyfriend sneaks into her room and that is what the MC would see... but ultimately felt that it was very cliché and wouldn't have an impact and shock that both the MC and Players would be able to react to... might've been a shock to the MC, but Players would brush it off quickly or found it erotic and stimulating; so the scene needed to have a lasting effect on both the MC AND on the Player... so mention of the household dog was used.
In the scene, if people notice, I chose to focus on the MC... not on the act that was taking place in the room, or even showing it, the intent (I thought) would be clear that the intent and focus should be on the MC's reaction to what he was witnessing rather than what was transpiring in the room... and make a social point that parents tend to have these illusions of who their children are and that those illusions make them complacent and unable to see the truth of things... until it is too late.
The scene also creatively provides Players who may choose to pursue using the MC's daughter a form as a means in which to 'Power Up' with a form of absolution with an internal argument of: "If she can have sexual interaction with the family dog, why not with me?"
Humans always look for ways in which to justify their behavior, allowing themselves the ability to rationalize the reason that they are performing an act that they wouldn't normally succumb to or allow themselves... they use that reason as means to absolve themselves of any guilt that they might feel... and, as the writer, it is my job to sort of provide the MC with those reasons to make the story more believable and provide an 'excuse' for that action if players choose to use it... even if those reasons might be a reflective excuse or a common trope like: "Well, if my wife is cheating on me and having sex with others, I guess I can too..."
Anyhow, hope that better explains the reason for that scene for you and any others... but again, most of scene is only hinted at, it is the reader that is filling the blanks in and if anyone took it beyond what I had written, than it was their own imagination... not mine.