The Polk County Sheriff's Office released the recording of the call Tuesday.
The girl called from a friend's house in Lakeland after the March 30 beating. The friend's mother got on the phone and told the operator: "She's got blood in her mouth a big old knot on her left eye, and we think she's got a tooth broke."
On the video you can see one of the girls blocking the door, but the victim says the girls eventually dropped her off at a nearby drugstore, reports CBS' The Early Show.
Eight teens have been charged as adults in the beating.
Part of the video was released by the sheriff's office and has been seen widely on national TV and the Internet. Authorities believe the girl was attacked and taped so the video could be posted on YouTube.
While the Florida beating was never actually posted on YouTube, CBS News correspondent Daniel Sieberg reports that a search on the site reveals multiple videos of young girls fighting each other. Many have been there for several months or longer.
"Young people harassing and bullying one another has been going on since the beginning of time," says CBS News technology consultant Larry Magid, "but the fact that it can now be distributed internationally via the internet is one more incentive."
A recent Pew Internet survey found that one in three online teens have experienced some form of cyberbullying with girls more likely to become victims, reports Sieberg.