BROOKLYN - ? A woman is under arrest Tuesday for the Monday night murder of her boyfriend.Officials say they found the victim, Samson Chan, in his home, unconscious and unresponsive with several stab wounds to his torso. Witnesses say Chan was also dismembered. Police say the girlfriend, Raquel Glenn, faces charges of murder and criminal possession of a weapon. Neighbor Harry Olsen says he never heard the couple fight. Other neighbors say the couple exhibited strange behavior such as blasting music, drinking excessively and racing their car down the street. Police believe Chan and his girlfriend met in a psychiatric ward a couple of years ago.Local residents say Chan has an 18-year-old daughter who was staying in Manhattan with grandparents at the time of the stabbing. Police continue to investigate.