She has regained her mature appearance as well as her full strength. She is the oldest Bloodsucker in the Holy Church's records.

It used to be that she would recover some of her strength on full moon days, and in so doing, her body would go through unsettling changes. Her sudden regaining of her full strength puzzles her. But still, she is pleased that she got her mature look back.

Personality-wise, she hasn't changed much and remains as innocent as ever, and she never attacks anyone unprovoked. And like before, she likes hanging out with Ella and Metamorphoses.

The news of the oldest Bloodsucker regaining her strength has spread to the Holy Church. The church doesn't really care what happened to Nocturna. They only see her as a heretic threat that needs to be eliminated, and they are already making plans to do so.
Oblivious to any of this, Nocturna is still enjoying her feast in her castle. Little does she know that her peaceful days are numbered...