Professor Minerva McGonagall finally settled her mind.
If Professor Flitwick escaped serious injury because Vinson Wright's Ice Crystal Phoenix woke up, she no longer wanted to bring up the matter of making Vinson send his pet away.
"What about Peter Pettigrew?"
Professor Minerva McGonagall gazed at Dumbledore, her eyes full of questioning and unease. "Why did he attack Filius tonight?"
"For Ravenclaw's Diadem."
Dumbledore did not hide the matter, even glancing at the startled Professor Sprout, and said softly, "There is no need for us to continue hiding this... Sprout, Peter Pettigrew, the disgrace of Gryffindor, is the attacker who targeted Filius."
Now, these matters could no longer be kept from any of the Hogwarts professors.
Peter Pettigrew acted with increasing audacity and lawlessness. Even though Professor Sprout lived a quiet and uncompetitive life, she might sooner or later encounter Peter Pettigrew, who had suddenly snuck back into Hogwarts.
At the very least...
The professors had to be made deeply vigilant.
They needed to know that a student who was nominally dead had now become a hidden danger to the entire Wizarding World.
Until Dumbledore briefed Professor Sprout on what Peter Pettigrew had been up to over the past few days, Professor Sprout's first thought was to protect the safety of the students. "In that case, shouldn't we re-establish the school's wards?"
"Yes, this is for their safety."
Dumbledore nodded, then sighed and said, "Tomorrow I will notify the parents. To ensure the children can study in peace, Hogwarts will be locked down at least until the Christmas holiday..."
If Dumbledore's Christmas plan still failed to resolve the trouble caused by Peter Pettigrew by the time the Christmas holidays arrived, they would simply have to think of other ways.
"Speaking of safety, there is one more thing..."
Professor Minerva McGonagall