I am very glad you enjoyed your present. Abraxas is a joy to write and I can see him being a pain to Lucius just to keep his son on his toes. :D
The werewolf incident should have been reported, and I think Poppy would have if not for Dumbledore.
Poppy has to be either a Slytherin or a Slytherin fan girl, it's the only reason I can come up with for her not being allowed to treat Severus' injuries later in the stories.