The monster tide continued after Lucia had left behind Cecil in the Darkfang family's care. She quickly used her Misty Gate and teleported to the walls.
Yuna didn't go with her. She instead made her way back to the Misty Barrier surrounding the Darkfang estate and monitored the situation.
She needed to make sure that Silver had indeed calmed down and his transformation was reverting. If not, then the Darkfang family estate may turn uninhabitable as of today.
If the miasma permeated into the earth, then it'll turn the land into a dead zone. The barren land would begin to fester and exude poisonous miasma and anything within the land would wither and eventually die.
"He's calmed down alright...and the miasma's beginning to grow thin. Good job brat...you can rest well now knowing that you
