Sarah J. Maas said this quote

So she steeled herself. “I have never told anyone this story. No one in the world knows it. But it's mine,” she said, blinking past the burning in her eyes, “and it's time for me to tell it.”Rowan leaned back on the rock, bracing his palms behind him.“Once upon a time,” she said to him, to the world, to herself, “in a land long since burned to ash, there lived a young princess who loved her kingdom . . . very much.”And then she told him of the princess whose heart had burned with wildfire, of the mighty kingdom in the north, of its downfall and of the sacrifice of Lady Marion.