Karen Marie Sanger, age 78 of Hartford, Wisconsin passed away, Monday April 6, 2026 at home. Karen was born May 27, 1948 in Hustisford, WI to Emma M. (nee Reopelle) and Arnold J. Rosenthal. She worked at the Booster in Hartford and Columbia St. Mary’s in Germantown. Karen is the beloved mother of Sara Webb (Justin) and Jason Sanger (Michelle); dear sister of Arnold Jr. (Barb), Sharon (Carol), Mike, Bill, Mark (Mary), and Richard Rosenthal. She was preceded in death by her parents. To honor Karen’s wishes, private services were held.