Thanks for sharing, fdu. Not going to critique since what's sent is sent.
But I want to give you my thoughts going forward. There are a lot of sentences in there describing how you think she feels. I would advise you to try to stop putting words in her mouth. You may think you understand what she's feeling, but it's best to talk more about you and what you think/feel. Instead of "how unloved you must have felt" you can say things like "I didn't show you how I loved you properly". I'm not great at it, but you want to validate her feelings, not dictate them.