Anton watch Virgil's indignation with a mixture of curiosity and wordless questioning. As Micha's older brother, Anton absolutely wanted to believe the merit of Virgil's words. It was reassuring to know the magical world had protections put into place for them and the Aigner's weren't free to come and whisk Micha away at their whim.
But, he was also a student of history, sociology and international politics. If the magic-less, like himself and his father, didn't even know the magical world existed, Anton had to assume they didn't have proper, adequate self-representation in the magical government. Sure, they probably had some designated witch or wizard that acted in their name but that was about as effective as an all white judge and jury insisting they could speak fairly and without prejudice on behalf of all the other races.
Things would only get more complicated if, one day, Micha decided he preferred to stay with the magical relatives that could better understand his life and world.
However, the depths and details of such a conversation weren't best suited for the morning after euphoria with casual acquaintances. Solving Schäfer Family Dilemmas wasn't what Virgil had followed him home for last night. Anton felt like he at least had enough to placate his mum's worries and, for now, that was sufficient.
"I don't think she has any intention of telling them," Anton offered, honestly. "She hasn't spoken to them since they left her when she was ten and I know there's no desire to start now. She just assumes they'll find out anyway; none of us really know what's possible so it's hard to counter that theory?" He offered an awkward half-grin and shrugged. "For all we know, some magical singing teapot and cup lamented the birth of a magical family member in their living room they day he was born."
That, Anton figured, was unlikely. Not because he could even guess whether the singing birth-announcement teacup was magically feasible but because he was confident they would have heard from the Aigners by now, if that were the case.
"I think, at least, I can convince her that they won't come and whisk Micha away. They didn't do that with Sasha, after all."