To me, Disappear is about a person in a bad relationship that can't get out. (I generally use "she" to describe the narrator just because it's Hope singing; no offense to you guys.) The first few lines express her indifference to him. Just becase he calls her name, she doesn't have to come and bow down to him. He then started ignoring her, which bothered her. "You nut! You're supposed to need me and love me and try to win me back now that I don't care as much about you!" He has to change his mind and forgive her beause he's afraid she really will leave him. She can't believe that he doesn't know what's been on her mind and he has fallen from the pillar of respect she'd put him on. Instead he just wants to keeping playing My Fair Lady with her, changing her and molding her into something she could never be. But this relationship is too integral to her. She is in love with being in love more than with the person she "loves". So now she's stuck in the old sickly scene where she can't even disappear.