Actually I don't think it's that unhealthy of a reaction at all. Y'all are thinking with your porn game dicks. I have a 20 year old daughter, we are fairly close - maybe not as close as Frank and Abby but she certainly trusts me - and I guarantee if she got blackout drunk and woke up in bed with me, both of us naked, there would be some SERIOUS fallout. Since the point of this game is (presumably) to end up with a harem of all three daughters, fallout on this scale would certainly end any prospect of that, which means game over. Not so unreasonable, IMO.