Elsa had just finished putting on her lab coat and was buttoning it when the younger boy - her age to be exact - answered her shyly, greeting her in a language she didn't understand. She would definitely ask about that later.
She grinned happily and nearly skipped to his side
"Yes! Thank you!" she told him as she neared his table happily
"I'm Elsa by the way".
As she looked closer, he looked unsure if he should be talking, like he was expecting the other boy to tell him to go chase Morgana in the courtyard or something.
She tilted her head to the side
" I'm sure he won't mind, there are still lots of people to partner with" she said reassuringly, winking at the end. There she went again, over affectionate and friendly. She hoped the boy didn't mind. He looked a bit to the shy side.
"Yes you can brew the antidote, I don't mind going first with the drinking really." she confirmed as she nodded. Plus, she was a little curious to figure out what a mild-poison was.
"How good are your potion brewing skills?" she asked curiously as she took a place next to him. A witch had to make sure she wouldn't end permanently ill or green, didn't she? No harm there.