(Photo by Jonathan Newton / The Washington Post)

Robert Griffin III opened his post-practice media session on Wednesday with a cryptic message.

“Before we start, I just met a real special individual that was in the conference room with us a couple of seconds ago,” Griffin said.

The Redskins quarterback wouldn’t say who it was, but he explained that a fan with a remarkable story had presented him a letter that she had carried around for more than a year.

“It’s just a story about why we do what we do as athletes,” Griffin said.

The identity and story of Griffin’s newest friend — and some of the contents of the letter — were revealed over the next few hours. Kate Dunn, a 16-year-old from Falls Church, idolizes Griffin. Diagnosed with a malformation of the brain, Dunn’s own football career was ended after she had surgery to remove part of her skull, and she found inspiration in Griffin’s story.

Dunn tweeted her disappointment after she didn’t get the chance to give Griffin the eight-page letter she wrote to him at the Redskins’s draft day party on May 10. Griffin responded by inviting her to Redskins Park.

“Like a dream,” Dunn said after meeting Griffin. “I’m not even sure that I’m not dead and in heaven right now. It’s pretty good.”

It got better.

Dunn and her mom, Amanda, appeared on News Channel 8’s “SportsTalk” with Alex Parker on Wednesday night.

“Words can’t even describe how happy I am right now, and just…complete,” Dunn said. “I feel relieved.”

Griffin surprised Dunn again by calling into the show.

“Having had a chance to read the letter — or, as I told her, it looked more like a manuscript — but having a chance to read that, it just added to the weight of meeting her and having a chance to hear her story,” Griffin said.

Griffin read part of Kate’s letter on air:

“I knew that Robert Griffin III was my miracle from God. This God-like man was truly a miracle who turned my life around more than any medication or therapist ever could.”

“It’ll go somewhere where I can always find it,” Griffin told Redskins.com. “It’ll go somewhere where I can always say, ‘Alright, if I’m lacking in motivation to continue to do the right thing, I can go to this letter and look at this girl who said I saved her life.’ It’s people like that that really make you do what you do.”