Lyric discussion by fireUrchin 

She is talking about Spirit. Wine is a common symbol of Christ. She may not be being specific to Christ, but Spirit for sure.

Spirit answers the empty spaces, is found in the empty spaces, can fill them up, and she has Intentions of reaching this space where she can "make the devil seem surprised" - transform her hollow loneliness to one of real 'light" [flying in the sun / my golden sky]

"All your sisters wanna fly" - a reference to women, sisterhood, recognition we all have these feelings of hollowness inside - perhaps for various reasons, or perhaps from being women, wanting to feel fulfilled by more than a man alone

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