or he just stays a stag so she will pet him all the time and becomes her "little friend" and she never knows<<and Sirius is with her one day and it's like "This is what happens when you fallow us one dates! This is awesome FYI.
Let's also mention the fact that William Sherlock Scott Holmes DOES NOT EXIST! That name is not canon and I'd love to punch the idiot that started it. His name is, and has never been more than, SHERLOCK HOLMES. Do your research, you sheep.