Siobhan had begun to violently crush the snake fangs required for the potion with the mortar and pestle when Yvette -- who had been slicing the pungous onions -- looked up from her meticulous work with a nervous smile. "So did you and Kyle get into a fight?"

The Gryffindor paused, realising that the powder inside the bowl was as fine as it could be. Quietly, she mumbled, "Yeah. Just a bit." She poured the snake fangs in and started to stir, and the rest of the potion was made under an impenetrable silence. 

Just as they had taken the potion off the fire to add the porcupine quills, the muggleborn added, "I'm sure you'll make up soon." Siobhan didn't want to respond and thankfully didn't get a chance to as Slughorn meandered over to them.

"Quite excellent! There has been a lot of good potion-making in this class today," he called out. Turning to Yvette, he ordered, "Now wave your wand above the mixture to finish it." Siobhan could tell when he hadn't left the table that he was going to speak to her again with an internal groan of dread. She'd forgotten about it, but Snape's detention had perfect timing. What a shame. "Ah, Miss MacFusty, about the [i]get-together[/i] of students on Friday..."

"Unfortunately I can't make it, professor, but I'm sure I'll be able to attend another time!" Siobhan watched as Yvette was forced to bottle their potion on her own. "I think Alistair might be going, though!" That seemed to settle Professor Slughorn and he continued on his walk around the classroom. The bell couldn't have rung fast enough -- Siobhan was already packed up and out the door to The Great Hall by the time it did.