Police are asking for the public’s help in finding Shaqwana Baker, a 21-year-old New York mother sought in a New Jersey child abuse case “that left her 3-year-old daughter gravely injured,” authorities said Friday. Baker, a Bronx, New York, resident, has recently stayed in North Bergen and Secaucus, the Hudson County Prosecutor’s Office said in a statement. According to police, Edward Smith, 29, of Far Rockaway, New York — Baker’s boyfriend — was arrested Feb. 24 at the Hudson County Correctional Facility, where he was being held ahead of a detention hearing on additional criminal charges. Abo…