Rebello was in the two-story home with her twin sister Jessica, a third woman and a man when Smith, wearing a ski mask, walked into the house through an open front door, Azzata said. Smith demanded valuables and was told they were upstairs, Azzata said.
Smith, apparently unsatisfied with the valuables upstairs, asked if any of the four had a bank account and could withdraw money, Azzata said. The intruder then allowed the unidentified woman to leave and collect money from an ATM, telling her she had only eight minutes to come back with cash before he killed one of her friends, Azzata said.
The woman left for the bank and called 911, according to Azzata.
Minutes later, two police officers arrived at the home and found Rebello's twin sister Jessica running out of the front door and the male guest hiding behind a couch on the first floor, Azzata said.
One of the officers entered the home and encountered Smith holding onto Rebello in a headlock, coming down the stairs, Azzata said. Smith pulled Rebello closer and started moving backward toward a rear door of the house, pointing the gun at her head before eventually threatening the officer, Azzata said.
Rebello's family declined comment Saturday.
The Rev. Osvaldo Franklin, who gave Rebello and her sister Jessica their first communions, on Saturday night told The Associated Press their mother, Nella, couldn't even speak to him earlier in the day.
"She was so devastated," said Franklin. "She's just crying. We have to pray for Andrea, to pray for Jessica because she needs help."
Franklin said a funeral is scheduled for Wednesday at Teresa of Avila Church in Sleepy Hollow, N.Y., and will be in Portuguese.
"The family's a very good family, they have very good values," he said. "I gave them first communion to Andrea and Jessica and they started to help me in the mass for many years. They are a very good, very devoted family."