Calise Manning's mother Centerria, who was 9-months pregnant and epileptic, had apparently fallen to the floor in the midst of a seizure on Wednesday in Kalamazoo, Michigan.
"She's shaking and she's having a baby," Calise told a dispatcher in 911.
"My mom is really pregnant and she's having a boy and she really needs help," Calise was heard as telling a 911 operator, an audio obtained by CNN affiliate WWMT said.
She said they had practiced what to do in an emergency.
The mother was taken to the hospital where her healthy baby brother, TJ Manning, was born Friday morning.
The dispatcher who handled the call said that she's recommending Calise get an award for being calm in a scary situation.