Where Has Abbie's Future Gone?

When I took pictures of the students in my class, I had expected to see Abbie in one of them. She was not present. The picture had been taken to show the students three months into the future. I thought she must have died during the next three months. I wondered whether there was a way to prevent this event. My student assistant, Jason Perkins volunteered to shadow her to prevent the tragedy. Was he successful?