[@Prince of Seraphs]  Max wouldn't be anywhere near a portal, though.  He's likely in the palace, or some more central location.  =/

[@Ojo chan 42] Just remember that crossing the border right now is going to be seen with a lot of suspicion, even more than just showing up as an unrecognized visitor.  And depending on how [@LadyRunic] feels about my suggestion of border/buffer/ungoverned zones, the distance may be a full day's travel, by foot, between where a barrier could be raised between Summer and neutral and the line for neutral and Fall.  Though I imagine a kelpie's swimming speed would be faster.

As for diseases being brought, I really don't think we need to go into where it came from.  There's diseases everywhere, including the Fey Realm.  The relevant part is really Lyra getting sick, not what causes it, although I will agree having an idea of what did it is wise.  Leaning towards appendicitis or something requiring antibiotics, probably the latter.  Max wouldn't have the best skill with surgery, though I'm sure he knows the general idea.  Then again, antibiotics would need to be fetched from the human realm....and there's not a good reason magic couldn't substitute.  *waffles*  I think pneumonia might work.  When I got a severe case as a child, I had to keep going for xrays of my chest.  *smiles*  This means that there'd be a need for repeated visits to make sure Lyra isn't getting worse and to track the course of the disease.  [@Belle], you want to weigh in here?

Still have a desire to have some iron-tolerant fey banished from the realm and craft an illness with iron or something woven into it, then set it loose to wreak havoc on the fey...or something....

EDIT: I /think/ pneumonia is caused by liquid in the lungs making an ideal home for organisms already present within human bodies.  I think.