Isa's intuition was telling her to shut up, or else…
And her own reaction shocked Isa.
In her more than a hundred years of living, this was the first time Draven had talked to her like this. Before, whatever she said, he would always hear her without giving any response. He would reprimand her like a true guardian, but only after he fully let her vent out. It made her feel that Draven was someone who was always by her side, and since he showed her favour all the time, never refusing her away no matter how busy he was, she thought she was someone really important to him. That maybe, she was special to him.
She never realized that to Draven, she was nothing more than one of his duties. All he had in his mind was the responsibility towards the ones around him and the promises he had made that he needed to fulfil.
Guilt and repentance.
He needed to protect and take care of those who had suffered because of his mistakes in the past.