Mary L. Kostecki, nee Pozycinski, beloved wife of Mark; devoted daughter of Joseph and the late Angeline; loving sister of Joseph (Georgia); dearest niece of Margaret (late William) Krueger and Lucille (late Duke) Scherer; also survived by many cousins, family and friends. Funeral Saturday, 10 a.m. from Malec & Sons Funeral Home, 6000 N. Milwaukee Ave. to St. Alphonsus Liguori Church, Prospect Heights. Mass, 11:15 a.m. Entombment All Saints Cemetery. Visitation Friday, 3 to 9 p.m. In lieu of flowers, memorials to Kellog Cancer Care Center appreciated. (773) 774-4100 MalecandSonsFH.com