Lyric discussion by bittersweet637 

meathoof knows what he's talking about. To be more specific about the end: the way she depicts her children is just her reflection of the present with the knowledge that she might die. she speaks of the first 3 with affection, but by the last child, she's sharing her fear of never seeing them (or her mother) again.

Hay, so my idea was that when she sings about Barbara, especially in the last line, she's thinking of her mom who had cancer and died, and is thinking "O NO, WHAT HAVE I DONE, I WAS BEING SO SELFISH" and she realizes how sad she was when her mom died and how she's about to put her kids through that.

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