Two Gryffindors and a Slytherin. Erin knew the two of them. She had lose points from here too and that was quite an embarrassment. Ravenclaw's the seond in house points and they didn't have the space to risk any more house points that were earned so hard by good students.

Erin raised her hand upon hearing Professor Schirmer's question, "Professor, looking from what you have done, your Patronus relayed the message to Professor Scabior and he came here right away. Also, even without the actual message, for example a friend or someone who knew your Patronus would know the person who's sending it."