My only thoughts on Eileen, if she's going to be semi-regular this season, she would have been more useful as a ghost. They had the means to bring her back, they could have waited til the end. I don't believe ghosts go crazy immediately. Some of the ghosts in season 7 had been dead for years and they hadn't deteriorated yet. I suppose if she dies again it would give Sam more motivation to get rid of Chuck.
I was always neutral on Eileen. It is good that Adrianne Palicki is busy with the Orville, I love that show, but Jessica would have been Sam's full circle. Although it has been 15 years since her death. Maybe at this point, it wouldn't have worked anymore.
This episode seems to be the reason Sam and Dean hate witches. It makes me hate them as well. Sometimes I think it's more the actresses that play them that makes me dislike the witch episodes.
Not a great episode, but not as bad as others have been this season.