No.
She can't simulate an 'ultimate defence' comparable with Gaara and/or Neji. It just doesn't work, her using rubble as a shield is just... retarded.
She has an 'ultimate defence' against death, arguably - what with the Yin Seal/techniques - but against taking hits/injuries? Nope, nadda on that front. Would somewhat negate the whole point of her being able to heal herself, no?
She can't simulate an 'ultimate defence' comparable with Gaara and/or Neji. It just doesn't work, her using rubble as a shield is just... retarded.
She has an 'ultimate defence' against death, arguably - what with the Yin Seal/techniques - but against taking hits/injuries? Nope, nadda on that front. Would somewhat negate the whole point of her being able to heal herself, no?