Photo : Hundreds of Fans and Supporters Hold Prayer Vigil for Bobbi Kristina Brown

Feb. 9, 2015: Denice Matthews of Riverdale, Ga., joins several hundred people at the Riverdale amphitheater for a prayer vigil for Bobbi Kristina Brown. (AP Photo/Atlanta Journal-Constitution, Ben Gray)

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 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" 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.

Bobbi Brown is the only child between Bobby Brown and Whitney Houston. Whitney was also found unresponsive in a bathtub on Feb. 11, 2012, and later died.