A few years ago, a Gardnerville woman was scammed out of $500 when she thought she was responding to a grandchild in distress.She was the victim of a trumped up story in which the caller impersonated a lawyer who said that her grandson had been arrested in Canada and needed $500.She followed directions to wire the money to a Niagara Falls address in Canada, and never told anyone.Several weeks later, her son discovered the loss when he was reviewing her financial records.Douglas Sgt. Pat Brooks knew the victim very well - it was his mother.The caller had directed her not …