It took a while for that wall to be built up. She is starting to tear it down with her letter to you, and you are starting to tear down yours with your letter to her......baby steps, Puppy....I didn't say it would build the wall even MORE. Just saying it will take work here. All of this didn't happen in a day, and it is going to take more work than one letter. Just like what you wrote to her. Just didn't want you to have this image of what it SHOULD be when you see her. Just let it be whatever it is. Keep talking, keep loving, show her your true love. She WILL reciprocate.
I guess I'm saying to not have expectations, just like you don't want her to have specific expectations of your behavior. You are BOTH working at this. The expectations of what you two are suppose to be like could be that "it" that keeps coming up.