Twenty-eight year old Olympic German high jumper is used to overcoming obstacles - but recently faced one of the biggest challenges of her life, after outing her stalker on Facebook.
The athlete took to the social network site after being emailed a sexually explicit photo by the stalker, and did what every normal recipient would do - published his name, details of his hometown as well as excerpts from the message.
"I've been offended in the past, sexually harassed and I've had a stalker before," said the 28-year-old.
"It's time to act, it's time to defend myself. And that's what I'm doing. No more and no less."
The stalker may want to rethink their actions, as not only did they antagonise one of the world's most renowned athletes, but also caused her to bring out her authoritative side - as Friedrich is also a police officer.
However, whilst many have praised Friedrich for taking action against the offender (she's also filed a legal complainst against the stalker), some have questioned whether she has taken the right steps in addressing the issue.
"As much as I can understand your anger about the stalker, you as a police officer should not just pillory somebody on the Internet," one Facebook user wrote on Friedrich's page.
"The reaction of Mrs. Friedrich is of course understandable, but she reacted too fast," Dr. Thilo Weichert, a data privacy law expert in Kiel, Germany, said. "It needs to be checked first, if the named person is really the correct one. Anybody can use a wrong name on Facebook," Weichert said.
Just like anybody can send in an explicit image to a world-renowned athlete.