Bea was someone with the potential to reach Rank 9 and maybe even surpass it, being the first on the planet to become a Law Master, so the Grand Patriarch would have been willing to change his plans for her sake, but she died, so he didn't plan to take any risk for the sake of a waste that failed to protect Bea.
The Ugador Clan didn't know exactly what had happened, but for the whole army being killed except the army leader and Bea's father, it was obvious that something major happened.
They believed that even if Shire appeared, he shouldn't be able to do more than leaving the army leader unable to act against others. They didn't know how it could be that the army was annihilated.
Thus, they guessed that a second Rank 8 expert should have appeared. If it had been someone at Rank 9, they didn't believe that the army leader and Bea's father would have been able to escape alive.
