Miss Granger, you foolish ...

Miss Granger, you foolish girl, how could you think of tackling a mountain troll on your own? Five points will be taken from Gryffindor for this, said Professor McGonagall. I’m very disappointed in you. Hermione left. Professor McGonagall turned to Harry and Ron. Well, I still say you were lucky, but not many first years could have taken on a full-grown mountain troll. You each win Gryffindor five points.
Miss Granger, you foolish girl, how could you think of tackling a mountain troll on your own? Five points will be taken from Gryffindor for this, said Professor McGonagall. I’m very disappointed in you. Hermione left. Professor McGonagall turned to Harry and Ron. Well, I still say you were lucky, but not many first years could have taken on a full-grown mountain troll. You each win Gryffindor five points.

Quotes from the same author

Raindrops the size of bullets thundered on the castle windows for days on end; the lake rose, the flower beds turned into muddy streams, and Hagrid’s pumpkins swelled to the size of garden sheds.
He didn't realize that love as powerful as your mother's for you leaves its own mark.
I am prouder of my years as a single mother than of any other part of my life.
So why in the name of Merlin’s saggy left — Don’t talk to your mother like that.
Hermione drew herself to her full height; her eyes were narrowed and her hair seemed to crackle with electricity. "No," she said, her voice quivering with anger, "but I will write to your mother.