Karen A. Masterton, 60 of Arlington Heights was born January 6, 1953 in Berwyn to the late Alphonse and Constance (nee Janus) Kiel and passed away March 10, 2013 at the Midwest Palliative Care and Hospice Center in Arlington Heights surrounded by her loving family. Karen was the beloved wife of Brian V.; loving mother of Timothy B., Daniel P. and Michael J. Masterton; dear sister of Alan J. (Joanne) Kiel and cherished daughter-in-law of Phyllis M. (late Robert) Masterton. She will always be remembered as a compassionate and inspiring Catholic school teacher to many. Memorial mass will be held on Saturday March 16, 2013 at 11:00 AM at St. James Catholic Church 831 N. Arlington Heights Road Arlington Heights. Interment will be private. In lieu of flowers, memorials may be made to St. James School Education Fund 820 N. Arlington Heights Road Arlington Heights, IL 60004 or the American Cancer Society 1114 N. Arlington Heights Road Arlington Heights, IL 60004.