The connections of the mystery reach farther than expected.
In the final minutes of DIG Season 1 Episode 2, another piece of the puzzle consisting of the stones and the breastplate, which I assume is also connected to the Joshes and therefore the heifer, was revealed.
Did you see that one coming? Perhaps just by the nature of her overall unwelcome demeanor it was to be expected. When you're unpleasant, you're not necessarily a good guy. Or something.