Mira's Back
With Maria as the new leader and Celaine taking up the rear, there has been a significant increase in speed. Part of the reason for that is they have both gotten used to Mira and another reason is they are much stronger than Aaron's group.
Rank 4 beasts won't willingly approach them and Rank 5 beasts get cut down without the ability to retaliate.
Like right now, a massive Late-Rank 5 Crystal Tortoise, a tortoise that has a giant Light Crystal on its back, is currently charging up a beam attack in its mouth. Before it could even try sniping them from a distance, Maria was already in front of it holding its decapitated head while Celaine dismantles it.
The two of them are so perfectly in sync that it makes Aaron's group look like a bunch of chickens with their heads cut off.