What was the catch her? Averie had a few drinks already, Kaito was the sober one and she never complained. Normally Averie was better about this and never caused problems. But in this case she had gotten slightly carried away.
So much so she was not thinking about using her summons to solve these problems she wanted to do it her like the adult she was. So now A drunk Averie was sneaking around, not realizing she was actually going to turn out to be the peeper in this matter.