Warren, Laverne "Betty" E. (nee Rister), of St. Charles, Missouri, died on Tuesday, April 19, 2011 at the age of 92. Beloved wife of the late Jess Warren. Dear sister of Steven Rister. Beloved mother of Bill (Kathy) and Tom (Arlinda) Warren. Dear grandmother of 14, great-grandmother of 27 and great-great-grandmother of 2. Dear mother-in-law of Amy Warren. Also survived by her special caregivers, Sue Wilburn and James Hamilton. She is preceded in death by her parents Bob and Grace Rister, son Bob, grandson Kirby, 3 brothers and 1 sister. In lieu of flowers, memorials may be given to the Alzheimer's Association.