Even though Ashur and the others had tried to keep it low-key, the fight in the servant quarters had not gone unnoticed by Astraea. She was impressed by how Ashur had held his ground even when he was outmatched three to one.
Not only had he managed to defeat them without using Elemental Magic, he was also merciful enough not to kill them and let them off relatively scot free.
This was a good display of self-restraint and a testament to the strong character he had in addition to his solid skills and physical fighting ability. Often, it was easy for powerful cultivators to lose control of their strength and just kill their opponents in a rush of adrenaline.