As if the world wasn’t still recovering from losing both Carrie Fisher and Debbie Reynolds last week, the first trailer for Bright Lights" Starring Debbie Reynolds and Carrie Fisher—the HBO documentary about the relationship between the two, which debuted at Cannes last year—is ready to pour salt on that wound in the sweetest way possible.

The documentary, co-directed by Alexis Bloom and Fisher Stevens, focuses on the lovingly complicated friendship between the Star Wars legend and her mother, the equally iconic star of such movies as Singin’ in the Rain and The Unsinkable Molly Brown as Fisher prepares to reprise the role of Leia Organa in 2015’s Star Wars: The Force Awakens. The two, who lived next door to one another, talk about their careers, aging and the close, fraught bond between them.

“My mother, she’ll forget she’s not 35,” Fisher—herself 57 at the time of shooting—says at one point in the trailer. “Age is horrible for all of us, but she falls from a greater height.”

Originally, Bright Lights was intended to debut on HBO mid-year, but following the death of Fisher on December 28, and Reynolds a day later, the cable network has moved the premiere to this Saturday, January 7. Meanwhile, you can read our 1983 interview with Fisher here.