Sorry for you loss but..
Your daughter was killed with a weapon that was not covered by the Bradey Bill(assult weapon ban). Columbine happened during the assult weapons ban and they had broken 11 federal firam laws before the first shot was fired(only one of the four weapons was covered by the bill). The VTECH shooter used two pistols, once again not covered except for mag capicity. If you want to be a gun control activist I suggest you do a little research.