Leslie Mannix of Chestnut Hill passed away peacefully on February 13, 2017 after a brief illness. She was mother to Bailey Mannix of Brookline, wife of her loving husband the late Michael Mannix, daughter of Jeanne and step father Jack McClellan, and her father, the late Neil J. Sullivan. Sister to the late Neil J. Sullivan Jr., Peter and Kathryn Sullivan of Boothbay Harbor, ME, Paul and Donna Sullivan of Simsbury, CT, and aunt to three nieces and a nephew. She is additionally survived by her stepsons Sean Mannix of Brookline and Todd and his wife Krise of Guilford, CT and their family. She also leaves behind many wonderful members of the Mannix family. A graduate of the University of New Hampshire, Leslie took great joy in being part of the AZ sisterhood. Leslie had a successful career in financial services working for a variety of firms in Boston. Funeral from the Bell-O'Dea Funeral Home, 376 Washington St., BROOKLINE, Friday morning at 9:10 followed by a Funeral Mass in St. Lawrence Church, 774 Boylston St. (Route 9 East) Chestnut Hill at 10:00. Relatives and friends are kindly invited. Visiting hours in the funeral home on Thursday from 4:00 7:00. Interment will be private. In lieu of flowers donations can be made to Seasons Hospice, 597 Randolph Ave., Milton, MA. 02186 www.seasonsfoundation.org/donate or the Make a Wish Foundation Make-A-Wish Massachusetts and Rhode Island, One Bulfinch Place, 2nd Floor, Boston, MA 02114 www.wish.org/donate