Adina Azarian, an East Hampton real estate broker, her 2-year-old daughter, Aria, and her nanny, Evadnie Smith, who were killed in a plane crash along with the pilot, were like a family, Ms. Azarian had written. While she was a single mother, Ms. Azarian wrote that “the reality is, I do have a partner in raising her, she just happens to be a lovely woman with a backbone from Jamaica. . . . Every family is unique and in ours Aria rules the roost. . . ”