(CNN) Charlotte Figi, a child with a catastrophic type of epilepsy who went on to inspire a CBD movement, passed away Tuesday at age 13.

Charlotte had recently been hospitalized due to pneumonia, breathing problems and seizures. She was treated as a likely case of Covid-19, her mother, Paige Figi, said Wednesday, although she tested negative for the virus.

"Charlotte is no longer suffering. She is seizure-free forever," a family friend wrote on Paige Figi's Facebook page, announcing Charlotte's death. "Thank you so much for all of your love."

Charlotte became a symbol of the possibilities of CBD after CNN Chief Medical Correspondent Dr. Sanjay Gupta told her story in the documentary "Weed." In the film, Charlotte was shown to be a playful child who was overcome by horrific seizures, which were quelled with Charlotte's Web, a marijuana strain named in her honor.

Charlotte had Dravet syndrome, a rare form of epilepsy which was not controlled by medication. The Stanley brothers, marijuana growers in Colorado, were crossbreeding a strain of marijuana high in CBD and low in THC, its psychoactive ingredient. After Charlotte began taking the CBD oil, there was a sharp decline in seizures. She began to play, eat and make connections like she hadn't before.

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