Jim and Kim Mentzer of Overisel announce the engagement of their daughter, Stephanie Mentzer, to Sgt. Sean Mather, son of Jeff and Sandy Mather of Cedar Springs.  The bride-elect is a graduate of Hamilton High School and Grand Valley State University.  She is employed by International Children’s Language School in Dongducheon, South Korea.  The groom-elect graduated from Cedar Springs High School and is serving in the U.S. Army currently stationed in South Korea. A June 18, 2010 wedding is planned.