Let's breakdown her interaction with coletti. If she was really being chased as opposed to being in a physcosis/hallucinating wouldn't she have been as clear as possible after he opened the door for her? Instead she basically stared at him and just said I need help then ran off again.
Coletti : "what's the matter?"
-No response for 7 seconds
Coletti : "what's the matter?"
-No response yet again
Coletti : "is somebody after you, huh?"
-Another 10 second pause the maybe shanna says something its not clear.
Coletti : "are you alright?"
Shanna : "i need help"
Coletti : "don't get yourself hurt, where are you going?"
-Again no answer from Shanna just breathing
Coletti : "wait a minute, where are you going? What are you doing"
-evidence in my opinion shannan was acting erratic, even coletti is confused (like pak and Brewer were)
Then shannan took off running again.
What coherent, sober, in true danger, person knocks on a door for help gets someone to open, then provides ZERO details as to what's going on, why they knocked on the door and what they need help with?
It would have gone a lot closer to something like this:
Coletti : "what's the matter?"
-BEFORE HE COULD EVEN FINISH ASKING
Shannan : "let me in let me in someone is trying to kill me , let me in and close the door call the police (or im on the phone with the police tell then where we are tell them your address)". "Help someone is after me he's chasing me" ...
ANYTHING !!! Instead she didnt respond to multiple questions from coletti , then said I need help and ran off again. If her words and action at Brewers didn't already confirm she was not in the right state of mind, her interaction with coletti, whom she sought help from was the cherry on top!!!
And I have no love for suffolk pd, I've have my fair share of problems with them but their experts have listened to the call and investigated every detail up and down and came to the same conclusion.