Does Stay down proccing on an enemy standing up prevent Reactive Strike of another character from working on that same enemy? Does Topple Foe from Marshal archetype attempt to Trip an

@pathfinder Does Stay down proccing on an enemy standing up prevent Reactive Strike of another character from working on that same enemy? Does Topple Foe from Marshal archetype attempt to Trip an enemy before or after the Reactive strike if the trigger was a reactive strike for re-prone pseudo-Stay Down purposes?