I'm not sure, but this might fit what you were looking for. It's the second part of what appears to be an ongoing story arc. The first part deals with Dean going to Lisa's after Sam jumps, and the story so far is leaving Sam in Hell. The first story arc is Adventures in Babysitting (Apple Pie Life) http://archiveofourown.org/series/36906. Samandriel makes an appearance in the last story of that arc. The second story arc deals with Dean and how he deals with various angels in the different stories. This is Dean Winchester, Patron Saint (Apple Pie Life) http://archiveofourown.org/series/147576.

The summary for the first story in this arc is: He did not sign up for derailing angelic mental breakdowns. It is so not in his job description…