Carrie Fisher isn’t one to hold things back. You can see it in her recent tweets about Donald Trump’s debate sniffles. It’s also evident in Bright Lights: Starring Debbie Reynolds and Carrie Fisher, Alexis Bloom and Fisher Stevens’ new HBO documentary about Fisher’s family. The film is enjoying its New York premiere at The New York Film Festival this week.

Entertaining, tender and illuminating, Bright Lights casts a spotlight on the relationship between Fisher and her mom, actress and singer Debbie Reynolds. Now best of friends, the pair live just a hop, skip and a jump from one another on their Beverly Hills compound. At the time of filming, Reynolds, who is in her 80s, is reluctantly plotting her final nightclub performances, while Fisher is preparing for her return as Princess Leia in the Star Wars series.

Fisher is funny and frank when speaking to the cameras. In the clip below, which was first posted on Deadline Hollywood, Fisher provides commentary as she brings food to her mother. The two of them operate like a comedy duo. Reynolds, who has six decades in show business under her belt, is perhaps not as comfortable having the camera film her when she’s not at her best. However, every moment with Reynolds in frame is like a drop of the most delicious honey. At times frail in health, the The Unsinkable Molly Brown actress remains strong-willed and keeps a good sense of humor about life.

The documentary also effectively weaves in the family’s turbulent backstory, which is punctuated by fame, divorce, drug addiction, and mental health issues. Helping in this department is Fisher’s brother (and Reynolds’ son) Todd, who is very much still in the picture. His home is filled with old posters documenting both of his parent’s careers, and he speaks about his mother’s interest in creating a museum with all of the Hollywood memorabilia she had been collecting over the years. Unfortunately, her dream never came to fruition, and the film captures the collection being sold off at auction.

The film also includes home movies and archival footage. There is sequence that is particularly moving that finds a 15-year-old Fisher called on stage to sing “Bridge Over Troubled Waters” during her mother’s cabaret act. The doc shows Reynolds remembering the time fondly, and gushing, like parents do, that Fisher had an incredible voice.

Mortality is another topic the film confronts. With Reynolds getting up there in years, Fisher and her brother are clearly concerned both with their mother’s health and her legacy.

Bright Lights: Starring Debbie Reynolds and Carrie Fisher had its New York premiere last night and screens again tonight (October 11) at 9:15pm at The New York Film Festival with the filmmakers in person for a Q&A following. The documentary is on the festival’s rush list, which means if you queque, you may be able to get tickets for $7 (vs $15). If you miss it at the festival, it is expected to premiere on HBO in 2017.