Where can you find literary criticism only on transformations by Anne Sexton?

We should have no doubt about Anne Sexton who is regarded as the poet with a disturbing life. She had her ways which has been regarded as sexual sadistic. She draws the reader in the world of 'fairy-tales'. She compels the reader in going through her work. She has a Plath style of allowing you in the mind rather than associating with dots. The poetry of Sexton has been regarded as raw. She is a poet sharing confessions. She expressed herself in simple language. While writing the Brothers Grimm Fairy-Tales, I came across sarcastic spins. I assumed that they were written in a new way. She utilizes the fairy-tales for sharing the experience of her life.