The turning point in this poem is when the Lady of Shalott realizes she no longer wants to A. live with shadows.
She has been confined in her tower for her entire life, not getting the chance to get to know the world around her - apart from what she can see through the window. However, one day she sees a knight she falls in love with and realizes she no longer wishes to be surrounded by shadows and tries to leave her tower. Unfortunately, because of her curse, this is when she dies.
