Terry is unmarried. Terry's mother, for whom she claims an exemption, lived in an apartment by herself. Terry's mother died on September $2.$ The cost of the upkeep of her mother's apartment for the year until her death was $$6,000.$ Terry paid $$4,000$ and her brother paid $$2,000.$ Terry's brother made no other payments toward her mother's support. Terry's Mother had no income. What is Terry's filing status?