"Influencer"... How much of this was because of unhealthy expectations for "popular" or "likeable" people? She doesn't look like a healthy runner to me. She looks like a twig of a, "popular" person. Shame on anyone who expects noteworthy performance out of anyone who isn't already a world-class athlete.
Anyone familiar with modern biology knows constant stressors and constant exertion is a recipe for death. Social media does not. Social media never does.
Never let randos determine how hard to push yourself. Ever.