To support the central idea that Anne feels she has no really close friend, the two best options are:
E. "All I think about when I'm with friends is having a good time. I can't bring myself to talk about anything but ordinary everyday things."
F. "We don't seem to be able to get any closer, and that's the problem."
These quotations reflect Anne's feelings of superficiality in her friendships and her struggle to form deeper connections.