The Potions Master's Apprentice {Severus Snape x OC}

Chapter Eleven: A Pining Professor

"Very well done, Miss Granger." Aria commended as the young Hermione Granger brandished her perfectly completed potion to the class.
"Now, who's next?" The professor questioned looking around the room for another student to choose. Her eyes quickly landed on an awkward looking fourth year Gryffindor boy.
"How about you, Mr Longbottom. Care to show us your final potion?"

The boy looked around nervously, attempting to straighten out his disheveled robes, hoping someone would save him from this inevitable embarrassment.

"Erm... I... I don't think I've done it right, Professor Dumbledore."
Neville shot a quick, terrified glance in the direction of Severus Snape, who was, as usual hunched over his desk, paying little attention to the classroom full of students.

"Don't look so worried, Neville." Aria replied softly, beckoning the boy to test out his shrinking solution. "Professor Snape and I are not here to judge your abilities, but to guide you in the right direction, allowing you to flourish to your highest potential."

Professor Snape let out a low grunt, looking up from his desk for a brief second, unimpressed by the encouraging words of his apprentice. 

Neville Longbottom took a step up to the front of the classroom, a small vial of his potion shaking slightly in his hand. Aria snatched a spare quill from the Potion Masters desk and laid it down in front of Neville waiting to see the results of his concoction.
The acid green liquid dripped down onto the feathers, small droplets of the potion pooling together, quickly drowning the quill.
The students stood around in silence, waiting for the quill to shrink down into practically nothing. However, instead of shrinking, the potion began to bubble and fizz. Within seconds the bubbles turned into a rabid foaming substance. After a few moments of watching the foam expand, it disappeared completely, the feathers of the quill melting away with it.

Almost as if the whole class had been holding their breath, a large number of students exhaled simultaneously. Neville's face dropped, disheartened by his efforts.
"Not to worry, Longbottom, we'll walk you through it one more time, and show you what went wrong."

"I don't think so, Miss Dumbledore." Professor Snape piped up, appearing at the side of  the young woman.
"Mr. Longbottom, I want you to write an essay at least 1500 words detailing exactly what went wrong, and how you will re-mediate your efforts in the future. I want this on my desk by tomorrow morning." His sudden appearance dulled the mood Aria had worked to built within the class, instantaneously.

"Yes Sir." The boy retorted, cowering away back to the crowd of students.

Aria stared at the Professor, stunned at his interference. The pair had come to an agreement where Severus took on the theoretical aspect of the job, teaching the students his methods, while Aria took on the practical aspect, helping the students as they brewed. Severus often stayed quiet during her teaching time, taking nothing to do with the students after he taught them the correct brewing process. He trusted her to lead them in the right direction, after all.
However,  today Snape was persistent in making himself known, he felt the need to remind them all of his intimidating, dominant presence, determined to scare the students, into obedience.

"Class dismissed." Snape ordered, the children fleeing from the room before the words had even completely left his mouth.

Just as fast as the room had cleared, Severus made a move to gather the papers from his desk, appearing to be getting ready to leave the classroom, something he never usually done until it was time for the great feast.

"Where are you going?" Aria questioned, closing the gap between herself and the Potions Master, stopping him from wandering off without an explanation.