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After retiring from acting, she became a screenwriter, working mainly in television (her husband Howard Phillips was an NBC executive). For her contribution to the script for The Blob, one of the biggest box office hits of 1958, she received a mere $150 (she was promised royalties, which never materialized).
In recent years, Linaker continued to work as a teacher of screenwriting, acting and film study at Keene State University, and was in fact one of the oldest college teachers in America. She died in Keene, New Hampshire, where she had been teaching and living near her daughter Katherine.