Because the great thing about fairy tales and folk tales is that there is no authentic text. It's not like the text of Paradise Lost or James Joyce's Ulysses, and you have to adhere to that exact text.
Philip PullmanShe wondered whether there would ever come an hour in her life when she didn't think of him -- didn't speak to him in her head, didn't relive every moment they'd been together, didn't long for his voice and his hands and his love. She had never dreamed of what it would feel like to love someone so much; of all the things that had astonished her in her adventures, that was what astonished her the most. She thought the tenderness it left in her heart was like a bruise that would never go away, but she would cherish it forever.
Philip PullmanMarisa! Marisa!โ The cry was torn from Lord Asriel, and with the snow leopard beside her, with a roaring in her ears, Lyraโs mother stood and found her footing and leapt with all her heart, to hurl herself against the angel and her daemon and her dying lover, and seize those beating wings, and bear them all down together into the abyss.
Philip Pullman