Er, for now let's stick with 'here, have a nice visit with your miraculously saved sister' and leave the fact that we had anything at all to do with his mother's death until we are all better acquainted. I'd hate to have to tie him up again.

And it's just Sirius who's flooing. Sam's got a bit of a hero worship thing going on at present and we don't want to crush his sensibilities by having him see his hero losing his breakfast.