While the situation looked bad, Eris herself wasn't all that worried, unlike the Saintess. She had spent the better part of her prime years working with corpses, cutting them apart and getting them ready for their families to see. While countless people respected her, the majority avoided her.
She reeked of death, and people found it disturbing to get close to someone who cuts up corpses for a living. Those last few days were especially rough with all the corpses coming in, and she was desperate for a moment of respite.
Arad might be a serial killer, a murderer, but she was fine settling for him, even if for just one time. So, while she looked like she was sacrificing herself to save the Saintess, in fact, she couldn't wait for that woman to leave them alone. She could even use this event later to garner sympathy and maybe find someone to settle down with.
