Why does Finch include the Taylor Prayer Chapel in their final wander in the novel, All the Bright Places?

This tiny chapel is the final wander that Finch included without Violet’s knowledge and led her to by including it on their map. This is the chapel that was built to honor victims of car accidents. Violet knows that Finch chose to lead her to this place for the peace it would bring Violet in dealing with her sister’s death. He leaves an envelope for her tucked inside the Bible in this chapel.