Millan's friends described her as a hard worker, avid runner and dedicated mother.
"Always giving, attention to her kids, everything for her kids and anyone else who asked for help. She was always there for other people," said Barbara Briggs, Millan's priest at Saint Alban's Episcopal Church, where Millan was active with her two children.
Police have still not named any suspects in the case, and her ex-husband Bill Hodkin was not charged and is taking care of their children.
"The family is greatly appreciative of how generous the community has been and respecting their privacy and volunteering their services and support at the drop of a hat," Hodkin said in a statement.
Millan had been paying him $8,000 per month in alimony up until her death.
She was an executive at MassMutual and led worksite insurance, which led the publication Wall Street on Parade to speculate she was killed because she held trade secrets.
Simsbury Police Chief Peter Ingvertsen said that is something the department is looking into.