I read this short in the June 2015 Reader’s Digest (RD). I love these kinds of stories! I paraphrase it here, but you can read in on page 25 of the Your True Stories, in 100 Words section in RD:
This woman, Grace Napier, out of Greeley, Colorado wrote how she’d been leaving for work one day, when, as she was making a right-hand turn out of her yard, she felt a firm hand restraining her right shoulder. She was forced left.
No one else was present.
Grace decided to continue in that direction and take the longer route to work. There was no traffic.
At the end of her work day, she returned home and learned there’d been an accident that had occurred on her normal route to work, the route she would have taken had she not been “nudged” out of the way. The accident had occurred shortly after 8 a.m., when two vehicles had crashed. The crash has also pinned a crossing guard between the two vehicles, killing him.
Grace said she would have been in that accident.