To Cole it looked as if Delarosa had swallowed a rather large and bitter pill, but in the end like most pills it was not as if it wouldn't be to her benefit. She just had to be sure of her conviction, Cole did not need to give her a sales pitch.
From just the way they had fought each other and the fact that Cole could use the abilities of his sword liberally within having to deal with the consequences of every move requiring his vitality to power it. He had a secret that could enable her to live as even becoming an Undead had not been enough to save her from the creeping entropy of the demonic blade she was bound to. What Cole was offering perhaps was a way to Survive, salvation, because he could see it in her clearer than she could in herself…. There was regret.