<div><p>When Katie Murphy's mom asked her for help putting toothpaste on her toothbrush, the 14-year-old knew that something was seriously wrong. </p><p>Her 45-year-old mother, Christa Murphy was having trouble completing simple tasks around the house, so she turned to her teen daughter for help. As Katie observed her mother, a school lesson came to mind that sent warning bells off inside her head. </p><p>Earlier in the year, Katie's teacher, Beth Tomlin, had used a story to teach her students about the symptoms of a stroke. </p><div><figure><a href="http://i.dailymail.co.uk/i/pix/2017/05/19/14/408AADDC00000578-4522476-image-a-14_1495201654280.jpg" target="_blank"><amp-img src="https://www.shared.com/content/images/2017/05/408AADDC00000578-4522476-image-a-14_1495201654280.jpg" srcset="https://www.shared.com/content/images/2017/05/408AADDC00000578-4522476-image-a-14_1495201654280_GH_content_550px.jpg 550w" sizes="89vw" title="" alt="" height="9" width="16" layout="responsive"></amp-img></a><figcaption class="op-vertical-center">Katie's teacher, Beth Tomlin (left), and her mother Christa Murphy (right)<cite><a href="http://i.dailymail.co.uk/i/pix/2017/05/19/14/408AADDC00000578-4522476-image-a-14_1495201654280.jpg" target="_blank">Daily Mail / ABC</a></cite></figcaption></figure></div><p>Katie's mother's strange behavior triggered the memory of the simple story. She began to notice the physical signs when the flow of oxygen to her mother's brain was slowly being blocked.</p><p><!-- [invalid-shortcode] --></p><p>"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.'"</p><div><figure><a href="http://i.dailymail.co.uk/i/pix/2017/05/19/14/408AADE900000578-4522476-image-a-10_1495201613685.jpg" target="_blank"><amp-img src="https://www.shared.com/content/images/2017/05/408AADE900000578-4522476-image-a-10_1495201613685.jpg" srcset="https://www.shared.com/content/images/2017/05/408AADE900000578-4522476-image-a-10_1495201613685_GH_content_550px.jpg 550w" sizes="89vw" title="" alt="" height="9" width="16" layout="responsive"></amp-img></a><figcaption class="op-vertical-center"><cite><a href="http://i.dailymail.co.uk/i/pix/2017/05/19/14/408AADE900000578-4522476-image-a-10_1495201613685.jpg" target="_blank">Daily Mail / ABC</a></cite></figcaption></figure></div><p>Acting quickly, Katie called 911 and her mother was taken to the hospital. Doctors immediately confirmed her diagnosis - Christa was having a stroke. Thanks to her science lesson, Katie knew exactly what to do.</p><p>'I'm extremely blessed to be sitting here today,' Christa Murphy said. Tomlin and Christa Murphy feel that God had a hand in Katie's intervention, considering she wasn't even supposed to be home at the time. </p><p>Perhaps it was a little bit of both.</p><amp-iframe sandbox="allow-scripts allow-same-origin" layout="responsive" frameborder="0" height="9" width="16" src="https://abcnews.go.com/video/embed?id=47494322"></amp-iframe><p></p><p>[h/t <a href="http://abcnews.go.com/Lifestyle/video/science-lesson-helps-teen-girl-save-moms-life-47494322" target="_blank">ABCNews</a> / <a href="http://www.dailymail.co.uk/news/article-4522476/Teen-saves-mom-s-life-thanks-science-lesson-strokes.html" target="_blank">Daily Mail</a>]</p><p><!-- [invalid-shortcode] --></p><p></p></div>