There was no way he could forget Saeril's power, and that was the one thing that could strike fear into his being. Therefore he remained wary of her presence.

The Goblin King scoffed a harsh laugh at Thorin's claim. “So you think his defiling days are done, do you?” At that, he turned to the smallest goblin there. “Send word to the Pale Orc; tell him I have found his prize...and someone else that may be of interest to him." By 'someone else', he meant Yavanna. 

Saeril didn't expect Azog the Defiler to be brought up, and unfortunately, she had that guilt again. However, she masked it quick. Like, really quick. She cursed out in Black Speech fluently, knowing it was the language of the dark forces, and the forbidden tongue of Middle Earth; rarely anyone has deciphered this tongue, and none wished to learn it. 

Stomping a heeled foot loudly, her luminous eyes seemingly glowed. "Foolish creature, he's nothing to you!", Saeril spat in venom, merely defending Thorin; this was the temperament of a creature who committed chaos and destruction. Crossing her was most definitely not wise. 

The Great Goblin jumped a little (as much as his massive form would allow) when Saeril stompped a foot and spoke her piece. "A friend of Thorin's now, are you? Odd...considering your past." At that, he smirked crulley, then looked to the group of dwarves before him. Now that Azog was being sent for, he felt braver than he may have normally. “Bones will be shattered, necks will be wrung! You’ll be beaten and battered, from racks you’ll be hung. You will lie down here and never be found, down in the deep of Goblin Town.” Again, he was trying to taunt them, he was daring them to make a move.