Donna Mills plays artist Tobie Williams
Play Misty for Me on IMDB
'Eastwood plays David "Dave" Garver, a radio disc jockey who becomes the target of Evelyn Draper, an obsessed female fan, played by Jessica Walter. Donna Mills plays his re-acquainted girlfriend and aspiring artist, Tobie Williams. The title comes from Draper's habit of phoning in to Garver's radio show and asking him to play the classic Erroll Garner ballad "Misty".'
read more on Wikipedia