Brewington began working in the church's office about four years ago, and she had helped out at its preschool before that, according to a July 2010 church newsletter.
Brewington has lived in a home on Rolling Meadows Way in Ellicott City since 1991, when the home was built, according to property records. On Friday afternoon, cars lined the street surrounding the home and people were seen entering and leaving the home.
Two men who were sitting on the porch told a reporter that the family did not want to speak with reporters.
In a statement, Stuart-Paul called Brewington "a tireless supporter of our day school and friend to the whole parish."
Kohn was ordained in 1994 and joined St. Peter's as associate rector in October 2003, Tillman said. Since August 2009, she had served as co-rector, sharing duties with the Rev. Kirk Kubicek.
Before that, she served in churches in Vermont, Massachusetts and New York. She received a doctorate in pastoral counseling from what is now Loyola University Maryland in 2009, and she also had master's degrees from the University of North Carolina-Chapel Hill and Duke Divinity School, part of Duke University.
While police said her name is Marguerite Mary Kohn in official records, church members knew her as Mary-Marguerite.
Tom Rodgerson, assistant chairman of the pastoral care department at Loyola, called Kohn "a great human being in the very whole and best sense of that term."
Her specialty in her studies at Loyola had been trauma in the church, Rodgerson said. That included incidents such as fires, sexual abuse, financial scandals — and violence.
"She helped to prepare clinicians on how to intervene and also how to do preventative work, when possible," Rodgerson said. "She was a person who did a lot of listening and was not going to ever be judgmental."
Baltimore Sun reporters Kevin Rector, Jessica Anderson and Alison Knezevich contributed to this article. Howard County Times reporter David Greisman also contributed.