HBO thought its documentary “Bright Lights: Starring Carrie Fisher and Debbie Reynolds” would be perfect for Mother’s Day. Instead, it has turned into a television memorial service.

    “Life took over and changed the rules,” Sheila Nevins, who runs the network’s documentary unit, said Friday.

    The deaths of Fisher and her mother on two successive days the week before last compelled HBO to swiftly schedule the film’s television premiere for Saturday night.

    “Debbie was so strong that she seemed almost in control of what was going on,” said Fisher Stevens, who made the film with his wife, Alexis Bloom. “She held on for a long time. She went through a lot of pain while we were filming and it seemed like (she said) ‘OK, I held on long enough. I’m not going to bury my daughter.’”

    Fisher, of “Star Wars” fame, was the film’s instigator.

    Learning her mother, at age 82, insisted upon performing some final nightclub shows, Fisher thought the experience should be preserved on film and contacted Stevens through mutual friends. The idea intrigued the filmmakers. Reynolds was the last of the MGM contract employees still performing and was a link to a disappearing world.

    Fisher became known as much for her humorous writing as acting and, in the film, is a one-woman one-liner machine. Both women found the process of making a documentary difficult. Reynolds was used to being on-camera, but not without playing a role; she would request a non-existent script. Fisher didn’t understand how much filming would be necessary.

    In the process, a story the filmmakers didn’t necessarily expect made itself clear.

    “Carrie said, ‘I’m my mom’s best friend,’ and that’s when we knew we had a love story,” Stevens said. “I wasn’t sure about that before. Then it just started unfolding as Debbie got more and more ill and Carrie started coming apart emotionally” as a result.

    The film depicts Reynolds’ frailty, her good days and bad days. One day she wasn’t up to being interviewed and called to apologize. She also had the capacity to bounce back; filmmakers thought Reynolds’ final Las Vegas appearance would be their endpoint. Instead, it turned out to be the actress receiving a lifetime achievement award.

    The archival material is rich, some shot by Reynolds herself. A 15-year-old Carrie sings “Bridge Over Troubled Water” at one of her mom’s shows, years before she met, married and divorced the song’s author, Paul Simon.

    One memorable passage catches Fisher visiting her father, singer Eddie Fisher, three months before his death in 2010.

    Stevens said he hoped the film would inspire viewers to call family members they don’t speak to often enough.

    (SD-Agencies)