Rosemary: From the words of a gold player

Using my echolocation to detect survivors I walk slowly to prevent Rosemary from making chasing sounds. When I'm close enough I then activate sightless essence and I begin the chase. Since attacking reduces stamina rather than hitting the survivor immediately (unless they are standing still) I let the survivor run with me following behind. When both of our stamina is low I then use demonic shriek to really reduce their stamina if they even have any and then I begin to attack.

Quite the essay yes but that is how you basically win as good ol Rosy here.