"Do I Know You?" is a clear-eyed account of one woman's neurological slide into advanced senility. Sorting through the telltale signs of Mary Solomon's evolving senescence - stale crackers in an otherwise empty refrigerator, once immaculate floors turned sticky, unpaid bills, forgetfulness, withdrawal - Bette Moskowitz has created an unforgettable portrait of an ordinary woman at the end of her life. That Mary Solomon is her mother makes the story...