It's everyones fault lol.
FL - she jumps to extreme conclusions and acts on it without getting more proof/asking the people involved if its true.
ML - he never talks to the FL, or clarified it sooner. Or heck, pushes more when she wont listen to him. He also doesn't clear it with the staff. and now the staff hates her.
Diana - I understand her position, but it's pretty selfish of her to let FL get the blame when all she wanted to hide was her (unrequited?) love to Julius
Julius - well he did try to tell FL that ML loves her... but he should've just told the whole truth re: Diana. I mean, his master and Mistress were affected. Shouldn't he and Diana have the decency to explain things to the FL (especially since they seem to know FL was acting)
gaaaah the miscommunication and angst is too much x.x but the art is just so beautifulllll