GHENT - Micaela Koster and Dr. Mark Maeyaert announce their engagement. Parents of the couple are Roger and Joan Koster of Chaska and Doug and Shirley Maeyaert of Minneota. Koster is a 2008 graduate of Marshall High School and will graduate from NDSU in May 2014 with a doctorate in pharmacy. Maeyaert is a 2006 graduate of Minneota High School and a 2013 graduate of Northwestern Health Sciences University. He is a chiropractor and owner of Elite Health and Wellness in Spirit Lake, Iowa. The couple plans an Aug. 10, 2013, wedding at St. Eloi Church in Ghent.