Nurmi was acquainted with Marilyn Monroe, Elvis Presley, and briefly dated both Marlon Brando and Orson Welles. In the early 1950s, she was close friends with James Dean, and they hung out together at Googie's coffee shop on the corner of Crescent Heights and Sunset Boulevard in Hollywood. Her explanation for their friendship: "We have the same neuroses." Dean commented, "I have a fairly adequate knowledge of satanic forces, and I was interested to find out if this girl was obsessed with such a force."
She married actor Fabrizio Mioni in 1961.
In the early 1970s, Nurmi opened "Vampira's Attic", an antiques store in her home on Melrose Avenue. She also sold handmade jewelry and clothing. She made items for several celebrities including Grace Slick of the music group Jefferson Airplane and the Zappa family. In the 1980s, Nurmi was asked by KHJ-TV to revive her Vampira character for television. She worked closely with the producers of the new show and was to get an executive producer credit, but Nurmi eventually declined their proposal. KHJ-TV continued with the show and changed the name of their character to Elvira. Later, Nurmi sued Cassandra Peterson, the actress who played Elvira. The case was dismissed when Nurmi was unable to pay for legal expenses. In 1994, Maila Nurmi was portrayed by actress-model Lisa Marie in Tim Burton's Ed Wood, and she was the subject of a 1995 Finnish documentary, About Death, Sex and Taxes by Mika J. Ripatti. Her last film role was in 1998's, I Woke Up Early the Day I Died.
In 2000, Image Entertainment released Plan 9 from Outer Space on DVD. The disc contains a bonus two-hour documentary Flying Saucers Over Hollywood: The Plan 9 Companion with extensive interviews with Nurmi and other cast members.
Until her death, Nurmi lived with her pets in a small Hollywood apartment. Unlike Elvira, Nurmi authorized very few merchandising contracts for her Vampira character, though the name and likeness has been used unofficially by various companies since the 1950s.
In 2000, Nurmi was featured alongside cult filmmakers Roger Corman, Doris Wishman, David F. Friedman and others in Ray Greene's documentary Schlock! The Secret History of American Movies, about the American exploitation films of the 1950s and 1960s. In 2006, Nurmi was interviewed for American Scary, a documentary about local late-night horror movie hosts. In 2006, Nurmi was the subject of another documentary called Vampira: The Movie. The documentary, featured interviews with Maila Nurmi herself, with numerous horror stars about Vampira, and with Cassandra Peterson about the Elvira lawsuit.
In the early morning hours of January 10th, 2008, while sleeping peacefully, Maila Nurmi suffered a cardiac arrest and passed away.