My good friend, Rachel, put it all in perspective in her email back to me this morning:

Poor, poor Mimi. Such a sweet heart and was probably so unsuspecting of the danger when the dogs came round otherwise she would have gotten away before they had a chance to pounce on her. I'm convinced the hand of God directed you home at the exact right time. Just think, even if you had been at home, you more than likely would not have know what was going on out front. This was split second timing. Mimi must have her own personal guardian angel.