I was about 10 feet behind another woman as we both headed into the nail salon at the mall early one morning. I wasn’t paying attention to the salon entry itself and apparently neither was she, as neither of us noticed that its sliding glass doors were closed. She hit full-face on, bounced back (didn’t fall), immediately cried out and put her hand up to the upper right side of her face. The glass hadn’t broken, so her skin wasn’t cut, but it was obvious from the sickening thud that she was going to have, at the least, a killer …