Mr. and Mrs. John Kilduff of Brattleboro announce the engagement of their daughter, Kristina Colby, to Dr. Eric Yang of Philadelphia, son of Mr. and Mrs. Kuang-Yu Yang of Newtown, Pa. The bride-to-be is the granddaughter of Ambassador Edward N. Ney of New York, N.Y., and the late Suzanne H. Ney of New Canaan, Conn. She is a 2002 graduate of Brattleboro Union High School and a 2010 graduate of Jefferson College in Philadelphia with a degree in Nursing, and is an RN at Temple University Hospital. The bridegroom-to-be graduated from Council Rock High School in 2001, and is a 2005 graduate of Pennsylvania State University and a 2009 graduate of Temple University School of Medicine. He completed his Internal Medicine Residency at Temple University Hospital, where the couple met, and will begin his Infectious Disease Fellowship at Oregon Health And Sciences University in late June. The wedding is planned for the summer of 2014.