The first full moon after Aries's coronation came just a few days later. Abel briefed Aries enough for her to understand how this night gathering would be for, its agenda, what to expect and people she should be a little wary of. Although Abel would be there with her, many things could happen and Aries had to stay on her toes.
In the Haimirich, every full moon, the night council would gather to talk about the matters of nonhuman beings. Many things happen in this empire that weren't known to the public. One of them was the crimes committed by vampires or witches getting ousted by their sisters or brothers that were usually addressed.
Abel had established the empire and after going through trial and error, he had figured he needed a different set of rules for nonhuman beings. After all, unlike humans, these creatures weren't as easy to deal with.