Aletha Grayce Foster, 80, of Belvidere, IL, passed away Thursday, May 23, 2024 at Symphony Northwoods in Belvidere, IL. She was born September 13, 1943 in New Castle, Indiana to Campbell S. and Aletha Evelyn (Gaar) Brower. She really enjoyed crafts, especially knitting, needle point and sewing. She was an avid tennis player and loved cooking and reading. She is loved and will be missed by her children, Dr. Ken (Cheryl) Foster, Kris (Tim) Siemsen, and John (Linda) Foster; grandchildren, Kara Foster, Kevin Foster, Chris Foster, Amanda (Ryan) Schroeder, Dr. Kurtis Siemsen, Hannah Foster, and Ellie Foster; brother, Rodney (Tischa) Brower. She was preceded in death by her parents and brother Jim Brower. Condolences can be shared with the family at www.belviderefh.com.