Dear Professor Dumbledore.
I am very grateful that you have once again sent me a very lovely 'Get Well Card'.
In my last letter I sent you I told you of the group of students that were possibly planning harm on two of your most respected staff, and that I was fallowing them to make sure they did not do any such thing.
I fallowed them to the Gryffindor dorms and waited outside for them to exit, but to my surprise when they did I could not see them! They must have cast a disillusionment spell or some such. (and while I commend teaching your students so well that they can cast such a difficult piece of magic, I should think that using it to sneak around the castle after curfew does warrant a reprimand.) I continued to fallow them until they came upon the room where the dog is being kept.
At first I thought that the dog was their pet and they were simply going to visit it, but after I watched the door for a good ten minutes and I heard some rather ferocious barking I decided that even though the last time I met the dog it didn't end well, I really should investigate and make sure that Hagrid did listen to me, and none of the children that went in slipped in the enormous pool of drool, and fell, possibly needing medical attention.
So I steeled myself and entered.
Now I really am very embarrassed to say this, but the Cerberus, it just looked so big with its yellow eyes, and I am ashamed to say I fainted again.
Thankfully, Professor Snape who was also keeping an eye on the children, found me some time later, and sent a message to Madame Pomfrey that I needed to be brought to the hospital wing once again, before continuing after the children himself.
And that is how I came to be in the expert care of your nursing staff once again.
See you at the end of term feast.
Cygnus Stixrood, Chief Centennial Inspector, Department For Permits And Filing.
P.S. I have no clue as to how it happened, but my condolences on Professor Quirrell's untimely death.