The incident happened in the Pisgah Forest in North Carolina.

"I fell off the track at high speed and crashed into a pile of prickly tree trunks," she writes, telling her she had internal bleeding from the cracked spleen-

Neff has posted a picture from the bed where she is resting and writes that she mostly sleeps.

“I still have a lot of pain and have difficulty breathing but my condition is stable now. I sleep a lot. Nothing else is planned right now. ”