Esme knows even Draco is no hero. This story that's flourished between the two has no saviour. They both carry the sins of each other on their backs. Esme's may be lighter than his, but if that means that life will offer her forgiveness for the blankness and void of her past, Then it's the resurrection and a formation of change. Change is what she's needed all along. A new influence with a different view of sight leads her on a path where she can learn to forgive herself.