Luna has always been the crazy one.
Luna has never said a word to anyone about the fact that the other Ravenclaw girls take her belongings, lock her out of the Ravenclaw Tower, and rip her homework up. Her teachers (except for Professor Flitwick) all think that she's scatterbrained and forgive her for it, because what she does submit, is extremely remarkable. Essays that aren't properly formatted but words that speak immensely to the professors, scattered notes with deep meanings, pictures that are worth a thousand words, only earn her at best, E's and not O's. Only Professor Flitwick looks at her sternly and always asks her the same question. "Is there something you would like to tell me?" Luna's never told anyone what she can see. She'd much rather talk of Crumpled Horn Snorkacks than dream of brightly coloured explosions and that feeling of loss.
Those who love us never truly leave us.