I think the song may gently demonstrate a depressed person desperately wanting to feel connected to herself after loss in a relationship, and not only does she apologize for the loss, but she projects images of herself to reflect the possibility of recovery. Essentially she's asking herself, "Can I turn the lights on? Can i recover/reveal myself? Can he/she see me? Can i see myself" in the hopes of making it all better/finding love again, digging it up, purifying it, finding a center. One could even see it as the ghost of a broken-hearted lover who committed suicide, the shelter being a coffin, or a lover contemplating to herself the thought of a suicide, that she feels dead and fancies herself finding sanctuary in death.
Could I be, was I there?
It felt so crystal in the air
I still want to drown, whenever you leave
Please teach me gently, how to breathe
(She's asking herself, "did i ever exist? i thought i knew myself so well, i felt alive before, i was so sure, of my love/myself
I wanted to share her version of "Fire and Rain" - a familiar song to showcase a new (to me) voice, but the misers at Warners have blocked it. So here's an original song, and an original haunting voice. This birdy can sing - but I guess that line has already been used 100 times!