"Glad to meet you, Caryn.
She turns her voice up just a bit, for the crowd.
"So. The Trods drain the Vallorn for fuel, keyed on by any who walk them. I believe I am capable of using outside-context magic and skills to vastly accelerate this process and produce magic that isn't trying to kill you. It will help if I know more about their workings, but even the worst-case scenario is only that it doesn't work; even if there is a catastrophic interaction of some sort I refuse to let the Vallorn win.
"Unfortunately, I don't trust many people, if I trust any people - including myself - with the theory of magic behind the tools and techniques I use, because of the sheer potential for fuckery inherent therein, but fortunately, once a working example exists, it is indefinitely replicable. I also have some rather potent non-magical equipment, and a subset of magical devices, that I am happy to share with anyone who sees an evil giant magic thing possessing people and squares up to punch it in the metaphorical face.
"As far as medical attention goes, that's not actually something I in particular can speak to the theory of, but if you model me as a part-time Herald of something or someone not of the realms you're used to, it's probably not wrong. That said, I've been here for like..."
She checks the time with a projected digital-wristwatch analogue.
"...I think that's - six to eight hours, I forget when precisely I set off this morning and time can get a bit wonky - so a) please do forgive any offense offered, I probably don't know better, and b) I don't know the fiddly details of things yet even if I've probably seen something analogous ever.
"I will now take questions; one at a time, please, if necessary I will start passing around a talking stick. I know people like me, and y'all are absolutely filled to bursting with questions about what, how, and who the fuck, but it will take longer to answer yours if everyone's trying to talk over eachother."