[Castiel studies her for a few moments before he speaks.]

I understand that apologies are inadequate in comparison for the event of which they refer to; I only offer because I don't know any other way to express that I was wrong. If there is something I can do, a punishment or task I can undertake on your behalf, please let me know. I cannot change what I did, nor can I do anything to make you feel differently about it. I can only learn and move forward.