Hi everybody!

I am looking for an older story about Deans deal - what I do remember about the general idea is that Sam tries to save his brother and is helped by some strange woman he meets in a church; Sam needs to shoot Dean before the hellhounds can get to him because they wont touch anything dead and the woman promises that she can fix this later;
there is one particular scene I remember about this story and it is during their last night when Sam wants to talk to his brother and Dean keeps doing trivial stuff; at some point he takes his bags outside and when Sam gets angry, Dean apologizes and tells him that he didn't mean to upset him, just wanted to take his stuff out of the room so that Sam wouldn't have to do it the next morning!

Does anybody have ANY idea about this story??
Thanks in advance!