Mynisha's Law - Authorizes any local or tribal government or a group of counties to submit an application to the Attorney General for designation as a Comprehensive Gang Prevention and Relief Area. Directs the Attorney General to: (1) establish criteria for reviewing such applications and for selecting areas for designation; and (2) establish an Interagency Gang Prevention Task Force. Directs the Task Force to: (1) coordinate government activities to create a comprehensive gang prevention response, focusing on early childhood intervention, at-risk youth intervention, literacy, employment, community policing, and comprehensive community-based programs such as Operation Cease Fire; (2) coordinate with local and regional gang prevention efforts; and (3) prioritize the needs of Comprehensive Gang Prevention and Relief Areas for funding under specified federal community assistance and grant programs.