Lighting candles, shining flashlights and tilting their glowing cellphones toward the sky, hundreds of people gathered in suburban Atlanta on Monday night to pray for the late Whitney Houston’s daughter, who is fighting for her life in a hospital after being found face-down in a bathtub late last month.

“Shining a Light for Healing for Bobbi Kristina Brown” was held at the Riverdale Town Center amphitheater south of Atlanta, a venue that Brown’s father, singer Bobby Brown, christened as its first performer in 2010, said event organizer Corey Punzi, the city’s marketing specialist.

Bobbi Brown is the only child between Bobby Brown and Houston. Her relatives have said she is “fighting for her life” at an Atlanta hospital.

Police, citing an ongoing investigation, have not disclosed many details of the circumstances in which Brown was found. Houston was also found unresponsive in a bathtub on Feb. 11, 2012, and later died.