Okay, here is what I came up with....I think this song could be about when she dreams.
She is leaving for awhile to go where her dreams take her, but she will be back because she loves him and always comes back to him. She is like a nomad....always moving from place to place, even in her dreams. His love is like a candle burning in the window....always guiding her back to him.
...just my opinion.
Michelle