Grand Prairie police are asking the public's help in finding a woman who they believe is responsible for two robbery attempts. In the latest, at 5:40 p.m. Thursday, a woman was walking to her apartment in the 2700 block of West Bardin Road when a woman tried to grab the victim's purse. When she failed, she escaped in a dark green Toyota driven by a man, police report. Previously, they believe the same suspects stole a purse in Grand Prairie then used the victim's credit card at a Kroger store in Arlington. If you hae information, call the police tip line at 972-237-8877.