My darling angel,
You are correct in your deductions that seeing Eurus smile affected me quite a bit. In a good way, mind you. It was nice to see her in a moment of happiness, even if it is fleeting. I must have mummy and father come with us on our next visit; Mycroft, too, if he wants. We should all be together even if it is only for an hour. You haven't the slightest idea how happy it makes me that you feel you are part of my family. You really are, Molly. My parents have practically decided to adopt you. Mycroft and Eurus have more than accepted you as their sister, which is a huge step for both of them. There is something so special about you that draws people in and brings them together.
Though I am glad I have done what you least expected in our relationship, I must point out that you should expect these things from me. I am fully aware that I have never given you, or anyone else, reason to believe I wanted a domestic life. I know that I wouldn't allow it for myself in the past. Ever since the dam broke, so to speak, on my emotions that I spent so long repressing, I've realized it is something I truly desire to have and I have even said as much without being direct. I always commented on your love life, whether I mentioned your 'domestic bliss', new prospects or previous engagement. I couldn't help myself, because unbeknownst to me at the time, I wanted those things with you. I still do. And now, I want more; I want us to have a beautiful life together. I fully acknowledged that I wanted children of my own after Rosamund's birth, and that I wanted them with you when I saw you holding her.
I cannot begin to express just how truly happy I am. It is indescribable. It has only been two days away from you and I am already longing to hold you in my arms. Surely, it is illogical to miss you so much when I will be back in four days, but it seems that my heart believes otherwise. I hope you are doing well. Please don't work yourself so hard, honeybee. I know you tend to do that whilst I'm away, but I'm asking you not to. Also, I have no doubt that Mary knew what she was doing. Thank you for saying that she would be proud of me; if you think that, then it must be true.
I love you, Molly, more than I could ever say. I will be home soon.
Love always,
William xxx
p.s. Check the drawer of my bedside table…there should be a photo album inside. Feel free to add to it.