The song is about a daughter, singing to her mother and in memory of her death. The mother used to abuse the daughter, so she has no affection for her, yet cannot help but feel grief, hence the line, "The love you never gave I give to you." Also, the daughter is lamented by the fact that the only attention she knew by the mother is the abuse given to her at a younger age. So of course, she is sad. Hence the line, "If I had died, I would have never felt sad at all." It's more a song of mixed emotions, and a touching lullaby to someone she hates, yet loves.
Christine - Salem, CT