Let's go ahead into the lyric analysis. You can find the lyrics here. As the song begins you sort of get this sense of being inside Amy's dream world. I think that the "screaming alarm clocks" represent people who try to get her to wake up from being inside her own mind, just as the monsters who are calling her name. And she doesn't want to leave, which is why she is lingering in the doorway. The way she puts it makes it seem almost childlike which would very much fit with the song. And when you listen to the song the way she says "let me stay" seems almost like a child throwing a fit because little kids never want to stop pretending or grow up and face reality. And then she goes on to describe this imaginary world of hers. The second verse here is my personal favorite. It really explains how this world of hers came to be. The world is full of "rampant chaos" and she knows that very well. Basically, she decided that she wasn't interested in dealing with the things that go on in the world and she has escaped into her own dreamed up world where everything is better.Then she goes on to describe how her world was before she created this imaginary place- she had insomnia and possible panic attacks in the middle of the night and she just longed for some sleep. And so she dreamed up this world to help her get to sleep at night.
Love to all,
-Autumn the Music Girl