Ophelia watched Tracey playing with her spoon for a few moments before she took another sip of her drink, comforted by the presence of her friend. She was okay with alone, but this was Tracey. They knew just about everything about each other, as much as a Slytherin could be intimate in that way. It was nice to not have to worry about public faces with someone, and to allow herself to show who she really was in a way that very few ever actually saw- and some that did see it didn't realize what they were seeing, meaning that she was still hidden.
"Tell mom Lae needs you?" Because most people who had ever been in pure circles knew about her brother's condition. Tracey knew that Lia was the one who worked hardest to keep his potions functional and developed better formulas that helped ensure the fewest possible bleeds and the most possible comfort for the older boy. A small smile curved her lips and she shrugged. "Make them busy." Because if there was something that made them more busy and there was less time to pay attention to Tracey, she could slip out more easily.
"New idea for potions." Which she knew would be a good distraction for her friend, all things considered. They both loved potions.