That all sounds splendid! Thank you! It is very kind for you to watch over Mr O'Hara when he is in such circumstances, and I know that he appreciates it. He spoke very highly of you when we met. I am also acquainted with Mouse, who I have to say is quite an excellent dog.
I have not lived here for very long, but before I arrived, I was in another peculiar realm with people from different times and places, and with all manner of magical abilities. You have my word that if Sirius and Harri do any magical learning together, it will be nothing but encouraging, and respect and celebrate the differences there may be in their talents. Sirius is still developing the finer points of magical control, and I suspect there will be some things each can do that the other cannot.
Sirius will not be attending school here. In our culture, children do not begin formal schooling until they are at least eleven, and when they do it is at a specialised school focusing on the development of their magical abilities. Sirius is only seven, and terribly unsettled over arriving here, and so he is going to learn at home, with a few visits from tutors.
Does Harri attend a day-school here? If she does, perhaps she and Sirius can meet in the early evening, or on a day when there are no lessons?