Louisville Mayor Craig Greenberg made a plea with state legislators last week to let the city make its own laws to deal with its "unique gun violence epidemic."
Archbishop Shelton Fabre presided over the service.
She was transported to Norton Children's Hospital.
Police say the woman is in the hospital recovering but is expected to survive.
Jacob Burnett, 36, gave a "recorded statement admitting to stabbing the victim" to the officers on the scene, police said.
At least 20 people have been injured by a shooter who has opened fire in Odessa, Texas, city officials told local outlets Saturday, while a second shooter was believed to be on the loose in nearby Midland.
As the nation reeled Sunday morning from news of a second mass shooting in the span of 13 hours, Democratic lawmakers began demanding that Senate Majority Leader Mitch McConnell take action this week on long-stalled gun control legislation they argue could help prevent the next large-scale tragedy.
Officers responded to numerous calls between 7:45 p.m. and 9:45 p.m. Saturday night involving a large group of teenagers.
President Barack Obama says he long resisted calls for military action in Syria because he didn't think force could solve the Syrian civil war.