IMO, Gilbert refused to leave because he probably didn't pay her. And then Brewer grabbed her around the neck from behind and most likely whispered a threat or something. And she phoned 911.
According to the Newsday story linked in my previous post, Shannan called 911 *after* or *during*(?) the time JB went outside to ask MP to help him get Shannan to leave.
Newsday
Gilbert vanishing reaches
one-year mark
Published: April 30, 2011
By Michael Among, Matthew Chayes, Chau Lam, Paul Larocco, Tania Lopez, Jennifer Smith & Andrew Strickler
http://www.newsday.com/news/breaking...mark-1.2849214
"Brewer went outside to Pak, asking for help in getting her to leave."
"Inside, Pak said Gilbert was standing near the kitchen holding her cellphone, a police dispatcher on the line."
"She had called 911 at 4:51 a.m. and police would be on the phone with her for 23 minutes. It was the last call recorded from that phone. She could not say where she was, and no officers arrived until nearly 6 a.m., after neighbors called 911."
"Pak said he tried to calm her and told her they should leave."
"Suffolk police have not released the 911 tape, but Suffolk Deputy Insp. Gerard McCarthy, commanding officer of the Special Services Bureau, said a dispatcher could hear a frantic woman and voices in the background trying to soothe her."
"After Gilbert refused to leave, Pak said he sat down, exasperated. He was beginning to suspect she was acting strangely because of a bad reaction to drugs and alcohol, which he said she often did with clients. Brewer said he saw no drugs. Police say they believe Gilbert was intoxicated."
"Finally, he'd had enough and walked out and got into his SUV, he said."
"A short time later, Pak said she bolted from the house, phone in hand, and fell down the front steps before running away."