The problem was not that she had knitting needles it was that she was walking. If she had been crawing to the knitting group ther would not have been a problem.
No seriously, this was a freak accident, true, but we should all be aware of the number of sharp objects we deal with daily. With this awareness should also come a little care. If we have a knitting bag we carry with us often do we have a way of covering needle points or sissor points, etc.