A Wisconsin woman didn't know she was having a stroke when she went to her daughter for help, but the eighth grader knew exactly what was going on.

Katie Murphy, 14, recognized what Christa Murphy, 45, was experiencing thanks to a memorable science lesson just two days earlier at St. John's Lutheran School in Lannon, Wisconsin, according to WISN.

Her teacher, Beth Tomlin, used a story to drive home what it looks like when the flow of oxygen to the brain is blocked and the teen used that knowledge to save her mother's life.

Katie Murphy (pictured), 14, saved the life of her mother, Christa Murphy, 45, when she had a stroke, thanks to a science lesson two days earlier at St. John's Lutheran School in Wisconsin

Christa Murphy didn't know she was having a stroke when she went to her daughter for help, but the eighth grader knew exactly what was going on

'I tell stories constantly so I knew a story was something they would grasp on to,' Tomlin said.

The teaching tactic worked for Katie Murphy.

When Christa Murphy found herself having trouble completing simple tasks around her house, like putting toothpaste on her toothbrush, she turned to her daughter for help.

Her teacher, Beth Tomlin (left), used a story to drive home what it looks like when the flow of oxygen to the brain is blocked, which saved the life of Christa Murphy (right)

Katie Murphy (fourth from left) is seen here with classmates in Tomlin's class

Both Tomlin (pictured) and Christa Murphy said they felt God had a hand in the situation

Remembering from the lesson that confused speech was a key indicator of a stroke, the teen was able to act quickly and call 911.

'Her speech was all mixed up, [and did] not make sense at all,' Katie Murphy said. 'I had gone back to that story and I was like, "Maybe she's having a stroke."'

Her mother was taken to the hospital where doctor's confirmed her diagnosis.

'I could not believe at the age of 45 that that was happening,' Christa Murphy said.

Both Tomlin and Christa Murphy said they felt God had a hand in preventing the worst, especially considering Katie Murphy was supposed to be out of the house at sleepover but stayed home with her mother, instead.

'I'm extremely blessed to be sitting here today,' Christa Murphy said.

The exact cause of her stroke remains unknown, but she is now taking medication to prevent a similar medical emergency in the future.