I mean, maybe unavoidable rape would be the better choice of words...? The dog scene is pretty much that while it appears that Cassidy starts feeling good about it. All the combat scenes implies that the ladies are feeling pleasure from the encounter. Losing the battles suggest that they surrender to the power of zombie cock and it's heavily implied that you will need to rescue them. Most games that follow that trope usually have a timer. The longer you take, the more corrupted she will become. But it's like I said before, the game is so empty of content now that you can't really know where things will lead. It's just implied. And guessing.
The only two "scenes" that appear to have full blown NTR are Vivian and Cassidy invasion events. But those can only be found on the files, so who knows if they will be added to the game.