Minna has been keeping the nature of the Rash illness pretty close to her chest - she may have more surprises in store for us as the story unfolds.
<totallyblueskyspeculation>We may be seeing something different. We have seen:
-- grosslings who lose themselves in both physical and dream space, scattering mind and body with random malice regardless of the danger to themselves,
-- trolls who maintain the ability to focus their malice and communication toward those who can comprehend the dreamspace,
-- immune humans who are unaffected on either plane,
-- immune and non-immune mages both with the ability to traipse around the dreamspace,
-- trolls who have kept the ability to vocally communicate with ordinary humans (notoros), and
-- at least one troll who was able to stay coherent enough in her mind to keep the semblence of her (very likely mage) personality intact despite her body's affliction.
We may now be seeing a person with her body unaffected by the affliction, though her magical mind is. Her grip on this plane comes and goes, mimicking the effects of dementia; she may have developed the malice toward uninfected humans that we see in many trolls. Her body may not even be infectious according to the 'known' vectors of infection, but she may be able to spread the spiritual side. </totallyblueskyspeculation>
(Now that I've written that, it will totally NOT come to pass. Relieved?)
What's in the bundle? Her mother Helmi's best cooking gear, rescued from Mikkeli? Probably not.