On the one hand, Alaria didn't want to leave her comrades to the mercy of the mad mage. On the other hand, someone had to report the discovery of the Apostle of Ensnarement, in case Klin and Kenjiro didn't make it out of this mess alive. Apparently, that someone was going to be her, now useless and unfit for the mission. After all, her colleagues were now undead, which would clearly complicate their return to Margel. Hugging her comrades goodbye, and also taking their money in case she had to report the catastrophic consequences of the mission to Her Majesty, Alaria and Septet leave the "amusement park".
Added 32 seconds later
Alaria has lost everything.