An 81-year-old Madison woman tries to do a good deed and becomes a crime victim.  She says she met a homeless woman and wanted to help by buying her some food at a Madison K-F-C restaurant.  When she went to the counter to get the food she left her purse on the table.  She says the suspect left before she realized some cash and her checkbook had been stolen.  Her name hasn’t been released.  Police were called and a restaurant employee went outside to confront 36-year-old Stacy M. Andruss.  She was arrested for theft, carrying a knife, possession of drug paraphernalia and violating parole.