She was called on by First Lady Nancy Reagan in 1981 after John Hinckley 's attempted assassination of the president , and stayed on as the White House astrologer in secret until being outed in 1988 by ousted former chief of staff Donald Regan .
She was called on by First Lady Nancy Reagan in 1981 after John Hinckley 's attempted assassination of the president . She stayed on as the White House astrologer in secret until being revealed in 1988 by former chief of staff Donald Regan .