Mira, Maria, and the two beast companions made it back to Lunar Fox City a couple of days after Mira decided to leave. There was no reason for them to stay there anymore as Rhydian wasn't intelligent enough to understand what Mira wanted, so Mira just decided to put it off. Also, finding a beast that could fight Rhydian on equal footing might be difficult as well. It'd have to be at least Low-Stage Rank 4 and Mira guessed that the beast might have to be higher than that to fight with Rhydian in terms of power. Mira didn't feel like finding a beast that she could barely fight let alone a little wolf cub that doesn't even know how to stop ripping off the heads of beasts.
I tried to go a bit more in-depth on how the Elemental Art Manual worked. I didn't want to just her to just read some incomprehensible manual then just say "Ice Prison" and it just works. Let me know what you think and if you want to read more of this type of style in the future or if you are fine with me just putting 'Ice Prison' in there and Mira is just able to use it. I personally like it, but I'm a little biased towards my own story. Thanks for Reading!