Jack had lived in America for awhile, and Fourth of July had been the only holiday she had allowed her parents to include her in the celebrations of. One year, they had decided that they did not feel like going out. Seven year old Jack had climbed down from her second story room and ran all of the way to the local high school to watch the celebrations there from the fence at the football field. Luckily, her parents had never noticed.
Therefore, it was not a surprise that she had a flare (ha! pun) for fireworks and explosives. They had always been a sort of back burner interest. In school, she had been too focused on juggling school, Quidditch, and detention. (And then later Potter's Army). The only inclination she had about her potential in the area was her zeal for explosive spells.
So, while she heard Poe having his own fun hexing everybody while they coughed and dodged the sparks, she had her own task at hand. Like a conductor gently instructing her orchestra, Jack waved her wand, controlling the fireworks. She split them, letting half follow their own chaotic instincts. Two she sent in a perpeutal spiral, another corkscrewed in circles around a table of menstrating witches, and growing one particularly pesky orange flare.
Her eyes had been squinted and a peaceful smile rested on her lips. She glanced over at Poe just as he did and they shared a large smile. Jack grinned wider. So, was that it now? Friends.
She motioned to the door, backing towards him. In a low voice, she said, barely above the fireworks, "If we are getting out anytime, it had better be now."