Fredrick!
Agatha normally hated going into Diagon Alley when it wasn't being struck down with restrictions and penalties, so to have to come here with an identification card to prove her oh-so-holy status as a pureblood, well. That caused problems.

But, her brother needed her. Mark had not talked to her in the past eight years as much as he had in the past three days. Which bothered Agatha to no end, but now that squibs needed escorts in the wizarding world, Mark was insisting that she take him somewhere every ten minutes. And--she normally would apparate him places when he needed to be somewhere, she liked doing him that favor, but it had only been three days and she'd already been to Diagon Alley thirteen times.

Fourteen, if she decided to not stick around while he met up with a girl in Fortescue's Ice Cream Parlour. Which she wasn't going to, as seeing her brother flirt was simply not something she wanted to be witness to. Agatha told Mark she'd be back, and he waved her off without a second glance. Good to be appreciated.

She was going to stop at the Magical Menagerie when she heard some arguing a few paces down. The ministry officials positioned around the alley were pestering someone. Lovely. With a shake of her head and her fists clenched in her ready-to-cause-a-scene manner, Agatha stormed up to stand beside the blond man that was being questioned.

"Why are you pestering my boyfriend?" Not that she'd even bothered to look up at the man in question, but Agatha figured that her fierce tone would be able to send the officials off on their way.