Sneaky, Minerva, Sneaky

Just then Potter entered, with Weasley nagging him as usual.
She saw Potter was not happy.
"Mr. Potter and Mr. Weasley. You are late. Detention with Snape, Mr. Potter. Detention with
Filch, Mr Weasley."
Potter looked at her, and saw the understanding in her eyes.
He went to sit with Neville.
Weasley sat with Hermione.
"Chapter four, gentlemen. Quietly."
Harry gave her a small smile, and took out his textbook to read.
She saw Neville nudge Harry and smile at him.
Harry gave a small smile in return.
Minerva got the feeling Harry appreciated being near Neville more than Ron or Hermione.
She could understand why when not five minutes later, Hermione screamed at Ron.
"Miss Granger, do you wish to join Mr Weasley in detention tonight?"
"No, Ma'am."
"Well, too late. You are joining him. Do not distrupt my class further."
She gave one of her looks.
Hermione just shut up and glared at Ron.
She noticed Harry hide a grin behind his hand.