HEGWEIN, Ruth A. Of Lexington, MA, previously of Winchester, MA, and Bern, Switzerland, on April 30, 2012. Survived by her American family: Mr. and Mrs. Robert T. Kidder of Ipswich, MA; Mr. and Mrs. Richard S. Kidder of Boston; Ms. Betsy Kidder, also of Ipswich; and several nieces, nephews, and cousins in Switzerland and the United States. A celebration of her life will be held on Saturday, Oct. 13 at 10AM at Follen Unitarian Church, 755 Mass. Ave. in Lexington. Interment to follow at Wildwood Cemetery, Winchester. All friends and colleagues of the deceased are kindly invited. Donations in memoriam may be made to Sawtelle Family Hospice House, Suite 17, 607 North Ave., Wakefield, MA.