A dazzling blond former Hunter College student was fatally stabbed and nearly decapitated Sunday after battling with her live-in boyfriend, cops said. The yelling between Sarah Coit, 23, and Raul Barrera, 33, inside their third-floor lower East Side apartment grew so loud that it woke neighbors around 2:15 a.m., witnesses said. Cops would later find Coit on the living room floor of the Clinton St. flat, blood spilling from her wounds.
