Student or Learner
Despite the monumental differences in our situations, I identified strongly with this eloquent girl my own age. Here predicament burned in my thoughts : How she hid from the Nazis in a tiny annexe above her father's Amsterdam office building bursting with frustrated life, "like a canary in a cage." How she remained hidden for two years with her parents, Otto and Edith, her older sister, the Van Daan family and a dentist. How they were caught and imprisoned in a concentration camp, where she died. How she still believed, after all she'd been through, that "people are really good at heart."
Please explain the highlighted group of words. (particularly `been through')
Despite all the appalling things that happened to Anne, she still believed that people are good.