Passed away after a short battle with cancer at Lakeridge Health, Oshawa. Predeceased by her parents Ron and Doreen Marden and sister Cynthia Watt (Neil). She will be missed by her sisters Wendy Grant and Brenda Holmes (Ken) and her brother Glenn (Karen). She will be also missed by nieces Kristi (Tim) and Kori and nephews Tim (Shayla), Nathan (Amanda), Matthew, Tyler (Alyssa) and Drake and great nephews Brice and Jasper as well as her loving cat Mabel. Sincere thanks to the staff at Lakeridge Health Oshawa for the care she received. In accordance with Heather's wishes cremation has taken place and a Memorial Service will be held on Saturday, March 20, 2021 at 2:30 p.m. at MOUNT LAWN FUNERAL HOME & CEMETERY, 21 Garrard Road, Whitby, 905-443-3376. Friends may call from 1:00 - 2:30, please call and book your visitation spot. Masks are mandatory. At the direction of The Bereavement Authority of Ontario, please follow the link for further information about directives surrounding COVID 19. https://thebao.ca/registrars-directive/ In Lieu of flowers, donations to the Charles H. Best Centre or Canadian Cancer Society would be appreciated by the family. Sign a guest book of condolence at www.mountlawn.ca