Sharon Doyle forgot to bring her gun to work on Monday. Her decision to go home to retrieve it may have ultimately saved her life. The 46-year-old store owner returned to Stan’s Health Foods in the Mayfair section of the city later that day. As she continued to work alone, police say a 47-year-old man entered the store with a knife in hand, immediately announcing a robbery. The man went behind the counter, grabbed the register and threw it to the ground, forcing it open, according to investigators. After grabbing some cash, he allegedly stood up and put his knife...