"She got hit,and she was out," Rose told KABB. "She doesn't remember anything after that.
"I wish I was here; I wish I could have saved her. It's devastating."
Lindsey's husband called Rose, saying his wife had a big gash on her forehead, the television station reported. While the woman will be OK, her family members are upset.
"Yeah, we are angry, because she didn't deserve it. No one does," Rose told KABB.
Campground officials did not comment, the television station reported. The Comal County Sheriff's Department has not responded to a request for comment.