My favorite episode of hers was when she came back as the girl Meg had possessed, and was like, fucking with Dean and blaming him for her death? I can't remember exactly which season, but it was a few seasons after she first appeared and I thought it was neat they got her back, and that they explored how technically, Sam and Dean did kill a few innocent people in killing the body the demon possessed. A lot of those folks were innocent people and they really just brushed over that a lot. But she did great in that episode and I thought she looked really good with longer hair.