I was just doing the Coria Dogs battle, and the game froze when Scarlet charged one of the bowmen in the assassin room.
I'm not actually sure what caused this. I suspect it was because the weapon broke as part of the attack... it may also be related to charging an enemy with a wall next to them, though I doubt it. Using latest steam version, btw.
Hm--the log you attached actually shows an error that occurred when you equipped Scarlet with a new lance that you got out of the common inventory, which may have led to the freezing bug later down the line.
I can guess at a possible cause of the error--I'm going to take a stab at fixing it in the next patch.