She was scared her parents, her friends, and everyone she loved would get less privileges as a jewish girl. She watched people who were innocent get taken away, and she was told stories by people who escaped the camps what happened there. Although her family around her told her not to, she couldn't help but feel anxious
A counter argument is necessary, in order to show one's audience that one has taken into account the opposing opinion/thesis of the argument but still sides with their opinion/thesis; it allows the writer to once again prove their thesis.
It was the fact that Caesar was looking to be crowned, and Brutus saw that the government was in danger.