While Rio was busy talking with his system, Artemis on the other hand was busy arranging stuff to settle the mess that her dear son created. Attacking a Baron and killing his son, if the news ever leaked that Blake family was behind this it could tarnish their reputation. Though no one would be able to do anything to Blake's but it would give their enemies some leverage and public outrage could be a lethal weapon.
Despite being one of the Duke's and owners of one of the top 5 guilds Blake family had maintained a good image till now in front of general public and Artemis had no plans to ruin that now.
Just after getting the report from Camilla she had ordered her to ignore Esme and first remove all traces of her. Since Esme had to show her true powers during that fight there was a chance that some residue mana would be left and with some advanced mana tracking artifacts someone could track her.