Katy Perry‘s Lifetimes Tour stop in Detroit turned a bit more dramatic than planned on Sunday night.

A young girl collapsed mid-show during Perry’s nightly ritual of bringing a few fans on stage to help her perform her 2011 single “The One That Got Away.” 

The fan, named McKenna, was spotted by Perry sitting in the very top corner of Little Caesars Arena, via a bright blue sequined skirt she was wearing. Perry even waited for her and a friend who came with her to make the long trip down to the floor level and embraced both as they came on stage, McKenna clearly overcome with emotion for being chosen.

She fainted as Perry prepared to start the song and was immediately attended to by members of the singer’s crew and venue medical staff; a visibly concerned Perry knelt alongside her as the crowd of about 13,000 chanted McKenna’s name in support. 

She was taken from the stage, after which Katy pulled the other three young fans into a group hug and led a prayer, saying, “Dear God, we pray for McKenna, that she will come back fully and brighter and better than ever. Amen.” 

Perry also remarked that, “It’s so much. Sometimes you’re so brave and you can get on stage, and it’s overwhelming. I understand that feeling.”

Perry then performed “The One That Got Away” and ushered the other three fans back off the stage. A short time later, while riding a giant butterfly prop above the crowd, she reported that, “McKenna’s doing great, by the way,” which was also confirmed to Billboard by backstage sources. Perry also shouted the fan’s name at the end of the song.

Sunday’s show was the 13th in the latest North American Leg of the Lifetimes Tour, which Perry kicked off during late April in Mexico City. The tour next stops Tuesday and Wednesday, Aug. 5-6, in Toronto and will run through Dec. 7 in Abu Dhabi.