There's something about them >_< “Uh Granger. Is it supposed to do that?” “Wait, ace of spades? Doesn’t that mean…” “…A perfect ma—” “No, There’s no possible way. Just as I thought, this “test” is complete rubbish.
I'd like to point out that Hermione stopped smiling 1 year before Harry and Ron did. She probably knew the danger long before them <--- I'd like to point out that Harry stopped smiling after year two and Hermoine smiled year three.