If you accidentally triggered an NTR scene with... say, Tori - for example, some guys grabbed her butt and she was topless - then she would gain a certain amount of corruption points and receive a "was topless" flag (which lowers the corruption requirement for removing her top in the future), and that's it.
From a mechanical standpoint, this means that next time, bar customers (or the master of the house in the maid quest) will have an easier time getting what they want (since her corruption is higher). However, as a player, you can counter this either through relationship level or simply by using a pusher. It's essentially a chain of relationship checks.