That's fair, but it won't be a huge leap to that understanding once Taylor and Harry get back in the public eye at Hogwarts. They'll be able to keep certain things secret for sure, but if Taylor influences Harry to react to certain things differently the Death Eaters will find out. Even him not reacting, like say to Draco baiting him on the train, which is unlikely, is a change that someone like Voldemort would pick up on from reports he's sure to get. And if she influences others like Hermione? Well again her influence will be pretty telling. It won't hint at what new tactics Harry and his cohort might use, but the fact that there is likely to be changes will get the Death Eaters wary. And that sort of wariness would lead to their magic being roused and prepared for a sudden attack potentially. Not saying Taylor can't overcome these difficulties, but she's not going to steamroll her way to victory through pure trickery.
Depending on how the story goes, I kind of wonder if it might get accelerate into action hard enough that the whole thing is resolved before school even actually
starts. Best summer ever! Went to Vegas, got married, defeated the big bad, the end! ...except then he'd still have to deal with going back to school after all of that. Bit awkward.
Still, though, this does stand to be an "interesting" holiday. There's a legitimate possibility of things getting all kinds of screwy in all sorts of ways when multiple parties have mind-reading powers in play, for one, which could potentially seriously kick things off. Just as well, Taylor might prompt Harry to radically greater decisiveness and basically skip to the end of the next book or something with friends brought in right from the start and getting serious about it, or she might blend trickery with a whole hell of a lot of simple sheer ruthlessness leading to "just a trick" somehow or another ending up with half a dozen houses simultaneously exploding or something.
I am quite entertained, though, by the prospect of Taylor interacting with Dumbledore and him kinda getting smacked in the face with some
extremely useful and precise insight that Taylor is just wildly guessing at with generalisations about fantasy elements, and Dumbledore undermining and obviating a great deal of otherwise future plot to tidy things up himself behind the scenes. Voldemort is some necromancer Sauron-lite guy who probably invested his essence in multiple anchors tying him to the mortal coil? What a notion! Cue Harry and Taylor getting stuck with "merely" schoolyear slice of life post-Voldemort, and both finding it actually a lot more difficult to deal with than frantic peril.
It wasn't a duel, or even a fight. Harry just let Voldemort kill him, with no intent on fighting him. Intent matters with magic, that's been a rule that was set all the way back in the first book with the Mirror of Erised.
Mm. The Elder Wand's transfer is about the previous owner being
beaten by the new one somehow, not specifically killed or disarmed or duped or whatever. In canon, Voldemort killed Harry, sure, but in that particular instance, Harry went in there
to get killed, and so ended up in an awkward position of winning by dying, attaining victory in death; why he did it defined what was actually done.
It would suggest, then, that, absent resurrection shenanigans, there could be a logic issue case in which the Elder Wand could well end up with a nominal wielder who is dead and gone and cannot especially conveniently be defeated thereafter, circumstantially making it hard for anyone to lay claim to it afterwards. Should the Deathly Hallows be felt to be an unwanted factor in the story, there's room to have Dumbledore perhaps follow through with something similar to that, maybe, depending on plot desires.
Depending on how things go, there could also perhaps be an interesting case explored in someone who isn't a witch or wizard defeating the wand's owner. Whether or not and how it's meaningful would be up to narrative preferences, but some scenario could be written with Taylor mugging Draco or whatever at some point and ironically having a super-wand of amazingness that doesn't actually do anything at all, or it be a plot tool allowing her to indirectly have magic or whatever.
