Is She Secretly On My Side? (Soundtrack of Her Life)

Is she secretly on my side
 Does she know all the reasons I've cried
 And secretly still sing along
 The soundtrack of her life my songs
 (She always got the meanings wrong)
 She's my sororal doppelganger
 Following close like a phantom
 Loving my discards just to confuse me:
 Which of us holds the hand-me-downs?
 (Which of us wears the wedding gowns?)
 Now she wears my old life, the life I think she made
 On my competitive side she preyed
 Did she always picture herself in my place
 Now the darling's won the race
 (I wish that she could see my face)
 Does she remember the day we tried on white dresses
 The day she was my sister, before I was her confessor
 Now does she revel in victory
 Or is she plagued by the ghost of me?
 (Haunted by what she can not see)