Huh so did Miranda move on?

It looked like it but I highly doubt that's what happened.

And you're dressed like Norman Bates! When HE dresses like Norman Bates' mother!

Or she's been given full access to the afterlife but is destined to resolve the continuing curse.

I don't think so. It didn't look like that from the promo for the next episode. And yes, I doubt that things are going to settle down after almost half a season.