The incident is overblown by the perpetually offended. She didn’t point the gun and the people are on private property without reporting to the owner of the property. I worked utility ROW even with high visibility vest and hard hat we attempted to contact the owner.
I believe that trespassers must be warned first that they are trespassing and then be permitted to leave. Only if they don't leave may the property owner use force to eject them. Even then, only that force necessary may be used.
I also believe that having a gun in your hand constitutes "use of deadly force". You don't have to fire the gun or point it at any particular target. Since the trespassers could possibly have been ejected using less force, the person holding the gun has used excessive force.
I'm sure we can all agree that an order from a policeman who has a holstered gun carries with it a threat that would not exist if the same order came from an unarmed person. If the officer draws the gun, that would seem to be greater force than just having the gun.