When I first came to the Hamptons in the summer of 1981, Tina Fredericks, who died in May at age 93, was the pooh-bah of East End real estate agents. “Realtor to the Stars”: So she anointed herself in her business ads, and so she was. The impression, widely held and not discouraged by Tina, was that she was the Queen Bee, and the rest were drones. It was more or less true.