Thread:Paul.rea/@comment-24544305-20150721181706/@comment-4091815-20150721190002

I still don't see the "error."

Up until this season canon already suggested Lydia was not "supernatural" like the others. Deaton's absolute statement about mountain ash confirms that, according to the show's definition on which canon is based, Lydia is not "supernatural."

You can parse it out between "shapeshifters" and others but the show doesn't make that distinction so it is not part of the canon.