Earl, thoughts are with you and your family. As has been said ... by the grace of god you were with her.
I know how life can change in the blink of an eye, my brother came home from work last month to find his wife on the floor with her head cracked open and a broken neck from the fall. It is still unknown why but she is a live. Had he been held up at his business for some reason or stuck in traffic, the outcome may have been different.
Take care and we will all be thinking of you guys.