Dove so fresh and young. -> Kali, her companion, is white like a dove.
Is your home above the ocean? -> World's Edge is skirted by the sea.
Soar to the heavens, beautiful one.
A symbol of peace and love, yet you seem broken. -> History reference, her family is all she cares about, because in her past she has been hurt by others (or hurt them).
Has the knife pierced your heart? -> Another history reference, as she slowly lets others in to her circle of trust.
Sing your song of sadness.