The aunt doesn't seem to realize that in a few short years, Eugene will be an adult with all the power that comes with it. He will be taken seriously in society and his words, especially as a Duke, will hold weight incomparable to hers.
It's good that this drama has finally resolved. Although I feel it will take a while longer with Erich since he is not aware of the abuse and the aunt always treated him better than the rest.
Thanks for the update!