The mass shooting at the Allen Premium Outlets was the 17th mass shooting in Texas this year. Tabatha Gunn is a counselor in Dallas who works with trauma survivors. She says trauma events like this can show up in the way people feel and act, even months later.The mass shooting at the Allen Premium Outlets was the 17th mass shooting in Texas this year. Tabatha Gunn is a counselor in Dallas who works with trauma survivors. She says trauma events like this can show up in the way people feel and act, even months later.