He was so worried. So so so worried. But they'll have all of eternity to have lazy mornings together, it's fine if the first morning after her complete transformation and following the series of related events isn't that lazy.
(Zash has decided he doesn't want to use words. Words are for people who aren't psychic.)
In priority order:
Nai is the least urgent of that bit. He'll keep, and some misery directly caused by his own actions is probably good for him. Builds character or something. And going after him while he's still trying to not be found—he's hiding from everyone but Yvette, right now—isn't likely to be very productive.
Disseminating research is important but also not very time-sensitive. There's a chance any given bit of it will help plants but the chance isn't that large and probably bigger chunks of coherent research are more effective. Besides, it's not just a matter of emailing a bunch of people some random equations; they need to work on presentation, on a way to make it reach a very wide audience, on a way to make it be credible enough—and, most importantly, on a way to convince people to stop sucking their plants dry, which is the most critical part of making everything else work as intended.
Elendira is a lot more urgent, what with how she's a murderous psycho, but a little bit of poking the plants turns up that she's not in the compound anymore and Dr. Conrad's best guess is that she went after Legato, who apparently called her an "angel of God". Now, maybe if they fix Nai they can get him to recall his missionary, but Zash suspects it won't be that easy at all.