It's another indicator of Violet’s progress that only three weeks after Finch’s death, she’s able to sit down and write him a letter. She obviously can’t send it, but it nevertheless gives her a place to get her thoughts out of her head and on paper, where they might be easier to process. In this way, she shows just how beneficial it can be to put one’s thoughts into words. While Finch’s inability to write and leave a suicide note is connected to his mental illness, Violet’s ability to write now illustrates her wellness.