Grese was accused of treating prisoners in ways that were illegal because of an international law called the Third Geneva Convention. People who had been prisoners in the camps Grese worked at talked about how Grese murdered and tortured prisoners. They said she especially liked to hurt women. They talked about how Grese beat prisoners, let her dogs attack them, whipped them, and shot them. They said she liked to whip women's breasts, and then make the camp doctor, Gisella Perl, do surgery on the women's breasts without anesthetic, because she liked watching them suffer.