Who does Anne Frank feel she can confide in?

Anne cared most deeply for her father, Otto, and a boy she went with throughout the summer of 1940 named Lutz Peter Schiff (Anne called him "Petel", a German endearment). She and Peter went their separate ways, but she said over and over in her diary that he was the only boy she had truly cared about. Later, though becoming very emotionally involved with Peter van Pels, Anne wrote in her diary that she herself realized that she saw Peter van Pels as a surrogate for Peter Schiff.