Then why do I feel as though you will anyway? It was what he wished to say, but felt that would only exacerbate the problem. When arguing with Dean, it was always important to know when to walk away and when to pick a fight. In many ways, he was easily the most exhausting human Cas had ever known. He was strangely pleased to see that hadn't changed, though it was a curious feeling.
"I didn't...I didn't know her name," he admitted softly, looking off to the side. "That was not something Mary and I have discussed. But we must find Mary first. Then if you wish to find Ellen also, I am willing. The question is if you'd allow me."
As for being angry with members of the family because they were family, he didn't understand that. He didn't feel as though he ever would. "I don't know," he answered honestly. "The only family I've ever known cast me out and even then, my relationship with them was built solely on lies and protocol. You and Sam. And Anna. You're now all I have. So I will assist if you will allow it. If not...I cannot promise I won't."