I would like to know what in gods name triggers Ari. I do my job amazing keeping it green but I still get killed for no reason. Then there's the part where she forces the door open and gets you killed.
Pretty much hints to one of the things you should do through out the night. Keep your sanity(?) high. Squeeze that plushie 3-4 times and keep your sanity full. If Ari shows up and sees you're stressed (bar is about 1/4 full), she'll knock you out. Sammy is a bit helpful too. When she's inside your office, upon shaking her off your sanity gets refilled.