Am I the only one who feels it's very unfair for Chidori to be the only one to apologise? She had done absolutely nothing wrong by having an innocent, platonic, private conversation with a friend, and Nanoha isn't entitled to knowing everything Chidori talks about with everyone she meets. If anything, Nanoha is the one who should be apologising and promising she wouldn't do it again. This sets a bad precedent in the relationship.