If you don't engage with the other dude events, they basically don't happen. All paths are entirely player driven. More often than not, you will find her being present in 2-3 places on the map early on as possible NTR events overlap with possible MC flag events.
That said, if you DO interact with some of the early stages of the NTR events, depending on which one it is, they'll still end up eating one of her time-slots every day, which will make it impossible to complete MC's route even if you don't trigger all the events up to the point where the route unlocks.
As such, what routes you trigger are entirely your choice.