Jack hated the fact that Ariel thought she was stupid enough to consider this being her only worthy training for the tournament. She had actually studied up on more advanced magic, she had challenged herself in classes, spent time in the duelling arena, trying harder in classes that may be relevant. She had just happened to be in this room, happened to get bored, and had begun some very casual, very relaxed training exercises. Did he really think she would take the tournament so lightly? That she would only practice with this?
But nevertheless, he was offering help, when no one else had. No one had asked how preparations were coming along for the tournament. Not even professors. She had decided to stick her nose up at any help, but she now realized that was just a stupid, pig-headed idea that was invoked by her own stubborn sense of pride. If she had learned anything from her interactions with Vito and James Wake, sometimes the best thing was to admit you were not a super hero, that you could not do everything on your own, that you were not perfect. Unfortunately, this was very difficult for Jack.
However, he had said something about a Boggart. Obviously, he knew where to find difficult things to practice against. She had been combing the castle for such things, especially because she would be needing them for Potter's Army. She was hoping to be able to use people's fears as a good way to practice against them, but she needed a Boggart, and that was sort of an odd request for your Care of Magical Creatures or your Defense Against the Dark Arts professor.
She mentally sighed. If she wanted the opportunity to be able to have access to some legit, dangerous foes for her own benefit and the benefit of the people she was responsible for in Potter's Army, she would have to swallow her pride with this vain, Slytherin boy and admit that she would not mind some help. She would also have to forget that he had, whether intentionally or not, offended her, because she now needed him on her good side.
“Right...” she said in a non-committing sort of tone, vague enough so he could translate it whichever way he wanted too and she could be content because she had not actually agreed with him in any sort of way. “Hmm... Well, believe it or not, I have been intelligent enough to go train in the Room of Requirement.” She raised an eyebrow and smirked, unable to keep back the biting words. “But I have been unable to locate a Boggart. And I was actually hoping on doing that. I haven't had much practice on one and you never know what you might face...” She doubted she would need to know how to fight a Boggart, but she did need one for Potter's Army. Last she had checked, she had been fine with Boggarts, but she could pretend for this cause. And she did have a lot to fear for nowadays...