Your concern really is very kind. I do leave him with Miss Adrian for an evening occasionally, so that I can go out and spend time with a friend. She is very understanding of our particular circumstances.
I should assure you, though, that when it comes to Sirius' welfare and happiness, my guard shall not be let down. I am all he has here, and I will not shirk that duty. Perhaps when you have had more opportunity to explore the extent of Barney's capabilities, or he grows more able to control them, we may reconsider things. Although I should say that shielding against children's accidental magic is a skill we tend to learn early.