The realization I'd not read the previous release.
Lady Sheila, rather clearly, was someone of import.
We don't know their governance structure.
She seems quite knowledgeable concerning their technology.
...she speaks of being a little unused to having a physical body; if the time within Ciel was purely slumber, that wouldn't count toward that.
So...the figure within the Druas Chamber, um, might that be her?
For certain values of "her."
Since she's not totally opposed to restoring Reina as the soul commanding the body I'm presuming she sees options for housing herself, acceptable options.
A tour, indeed.
Seeing that which she might not be capable of seeing in this manner again?
Like Heale is gonna be satisfied with Sheila becoming such.
At a minimum something akin to Nona and Sera.
...what might <Cave King> accomplish given proper guidance and his force of will?
Anyway, I don't see Heale being satisfied with Sheila not having an acceptable housing, and "acceptable" here means acceptable to him.
That's the kind of guy he is.
And he'll want the same for all of those who slumber.
To paraphrase...Not all who slumber are lost.
Now that he's aware of their state, he'll not be content with it.
It'll be interesting to see just how off my speculations prove.