In fire dungeon raid, I destroyed both Shika and Funeral clothes and keep hitting only funeral but they won't surrender. Unlike Shika if you dealt enough damage to her, they both will run away. Is there any certain point where I need to do more damage to funeral so she will surrender?

In the group battle together with the raiders, you only have to destroy the clothes of one of them, in the solo battles you have to completely destroy the clothes of both of them.

In the fire dungeon can we possibly hire them as leaders for the the future battle due to the fact that they have a lion and a deer for riding animals?