I'm pretty sure all three of them are in Sally's body. Nora's remark, I think, was just intended as a red herring. Although, if they wake up in their coffins, they could not look like healthy humans, as marillion
says-- they would be more like traditional zombies (albeit with their normal personalities).
I thought this was a great premiere. Lots of curve balls. Josh is cured, Aiden is possibly the last vampire standing and Sally is somewhat alive. I love this show.