She's a four-year-old girl, and people (especially her Dad) insist she's a boy.
Not that she isn't sometimes. She is. But not today! Today she's a girl. And Dad keeps saying that's not true, that God made her body perfect and she shouldn't second-guess God's plan for her. God made her a boy, so she's supposed to be a boy. And on the one hand that kinda makes sense. God doesn't make mistakes, right? So if she were really a girl sometimes, then she'd... what? Her body would change, she guesses. But on the other hand, she knows she's a girl. She's a girl with a peepee, that's obvious. She'd prefer not having a peepee when she's a girl, but it's not the worst thing ever. And if God doesn't make mistakes, God also didn't make her feel like a girl sometimes on accident, right? It must be part of His (because God is always a He, even though God made everyone, boys and girls, in His image, he's always a He, Dad says) plan.
She tells Dad that, today, and Dad gets angry, and yells at her, and she doesn't know why he's yelling. It makes sense to her! But he won't explain why she's wrong, he's just yelling, Dad's so mean, she hates him, and she's not crying, shut up, you're crying!
And now Mum's coming and she's talking to Dad, and that usually makes Dad stop yelling and go away but he won't stop now and Sadde's angry and afraid and hurt and she's running away. A part of her thinks that it doesn't make much sense to run away, the park is pretty open and she can't really hide anywhere, and she'll have to go back because she'll get hungry (not now, though, she just ate a sandwich).
So she runs until she finds some bushes where she can hide, and she hides there, and she doesn't cry, and she spends a long time not crying. Mum and Dad don't come after her, though, and after she's done not crying she doesn't wipe her eyes and her nose, and she comes out the other way of the bushes she was hiding in.
And she's pretty sure that's not the park.
"It's possible we won't be able to hear his reply if he triggers something to make it hard to transmit orders."
"Yes. But only if I hear it. And for a fairy you need the whole thing, not just a syllable like can work for mortals."
"That's kinda ridiculously unfair," he comments. "But anyway, if we set up good microphones around the trap, there's software that can filter noise. More than one microphone, placed in different locations, will help with that, so even if we can't hear it then, we might be able to get it from a processed recording afterwards."
"Not totally sure, but I think the idea involves rejecting sound frequency bands, and finding certain patterns that correspond to speech, and matching them between the different sound sources."
"...well, theoretically the same thing works for all human languages and they vary a lot, but hmm, good point, we should test this. And actually if it sounds nothing at all like human speech that might make it easier to pick out, depending on how it goes."
"I don't know what it would sound like to a device, which presumably is neither a plain speaker nor a speaker of a mortal language in the right sense."
"No, it's not. And for that matter, it's kinda weird that it even works when recorded, I mean, did your magic speech also enchant my phone?"
"So how come I still understood what you said when I was playing it back there? Shouldn't I have heard whatever gibberish you're actually saying?"
"I'm not doing magic to your ears," she says. "I'm just talking and you understand me. The phone transmits sound, so you can hear me talking through it, and you can understand me."
"...that's. That's pretty much magic. It's not the same magic as sorcery or the ordering business, but being automatically understood by whoever hears you is not a thing the regular laws of physics really allow."
"I don't know. I just talk. It works in writing too, though, even if all there is is paper and ink, you'd be able to read what I wrote."
"Okay, I'll need to run your voice through software and hire someone who knows more about this in case the software can't do it automatically. And it might be best to record Yellow, as well, to see if your plain speeches are similar and what can be derived from that."
"I'll record it now with my phone, and run it through stuff while you're doing that and I'm setting the mortal side of things up."
"Okay. So I need a phone, and then Yellow and I will go take a cutting of my tree and assuming we don't get caught doing that I'll find a new place to put it and grow it until we can all fit inside and gate from the interior of the tree to the same place the gate that got us here is."