Exactly this. And I'm pretty sure opinions about this could be wildly varied. While the clans might have been given autonomy, maybe even on varying scale, most likely there are Loroi being discontent with the status quo. Like Nelonial who'd rather see the clans summarily disbanded and folded into the Empire.
The Mizol are between a rock and a hard place now. If they keep under the wraps that there is an unknown alien with a perfect Lotai on Deinar, they may be forced to surrender one of their own - or two - to Empire law for hurting a male the moment someone brings them in front of a court. They might get out scot-free because Nelonial acted under duress, but it could be a very hard sell because she did escalate the level of the confrontation. On the other way round they could go for a partial disclosure - since Nathanial is an
alien, the laws protecting males wouldn't apply here.
The third option would be to 'clean' everything, bury everything in the deepest hole they could find and never even think about this. While this might be the most convenient option for a Mizol, future told us that they didn't take that path
, and I'd peg the typical Mizol as not that wasteful as to throw away someone with a perfect Lotai without at least trying to bring him into the own fold. Especially if said someone could even take others with him under his Lotai.
I think given with Coral's findings and maybe some aerial recon using drones the Mizol might opt for a second attempt at contacting them, though more with the stance 'we know who you are and you cannot hide forever... so let's talk'. That wouldn't cost them anything, they'd be acting from a position of relative strength and a further decision on how to deal with the diral and Nathanial would be a better informed one.
Yep, a light touch would be needed, and history has it that the First Contact situation almost went haywire
About the medical treatment - there's the complication that they have to deal with a completely unknown biochemistry. Naturally that excludes typical medicines like antibiotics and analgesics, it could preclude salves, liquid bandaids and such, too, because of components that could cause an allergic reaction. And an anaphylactic shock on top of the blood loss would be the last thing they need. So without a decent breakdown on his biology they are limited to most basic treatment like cleaning and dressing the wound and removing foreign bodies and replacing the lost volume of plasma to keep his circulation running and fight the tachycardia. In short, they may have hi-tech medicine, but it's hi-tech
Loroi medicine which could easily kill a human if they aren't careful.
On the other hand, Nathanial might be lucky that typical pathogens like bacteria and virii won't get hold in him as well because of his different biochemistry.