Charlotte the fire mage.
Charlotte was a new member of the adventurers guild, and joined around the same time as John, Paul and Aura. She was a capable fire mage, and joined Aura on many of her adventures.
Upon meeting Aura, Charlotte mentions that she had already had an encounter with the spiderlings, thus proving her to be a capable adventurer before joining Aura.
After defeating the spiders in the mine, Charlotte goes to the Boar Hut, where she had already gotten in trouble with the law before. Aura could keep her company and prevent her from getting into trouble. If the player doesn't, then Charlotte will get in trouble with the law.