[Left by Miguel's door is a small box. Inside is a scrupulously cleaned little potion bottle containing approximately 2 fluid ounces of blood. It also contains the returned forms, which Arcturus has completed to the best of his ability with his quill pen now that they don't contain references to forbidden muggle machines. They're all in order, apart from the occasional date with the year given as '1867'. Arcturus has a big flourishy signature. There's also this short note on parchment:]
O'Hara,
I hope you won't think it an awful cheek that I'm sending you this now, after everything. I'm sorry for the trouble. Crawley and I were only trying to do the right thing, and I hope not to lose your friendship over it. You are one of very few here who knows what it is like to have seen this place as man and boy both.
I thank you for your great care with the papers.
Please do what you can for our Siri. I understand better how it works, now, and even if the past cannot be changed, I want very much for the boy I am caring for here to have a better chance in life.