Katherine Carpenter, 56, who called authorities Feb. 26 to report a body found in a closet in Pfister's home, faces charges of first-degree murder and conspiracy to commit murder.
Carpenter was an employee of a local bank authorized to find new tenants for the home, the Aspen Times said Sunday.
The body of Pfister, a member of a prominent Aspen family, was found four days after she returned from trip to Australia. Her Facebook entry of Feb. 3 indicated tenants William Francis Styler III and his wife Nancy, were "not paying rent and they haven't paid utilities."
The Stylers were arrested March 3 on the same murder and conspiracy charges as Carpenter.