Murellia is a big plot point later in the story. If you're curious . . . .
Spoiler!
She is the reason the black cat tribe was cursed. Due to her releasing fragments of the evil g** (formerly war g**) and enticing others it created a major catatrophe as well as the fall of their clan who originally ruled the beast kingdom. To say the least the gods were pis*** and wanted to exterminate the black cat tribe. However the goddess of chaos intervened on their behalf and prevented their extinction. But at the price of changing their evolution condition which was cleaning up their mess. There is a reason why the black cat tribe has fallen so far. But that is an entirely different story.
