After about a month of this, Emma decides to leave the lawn early- she's finished her letter to her parents, and wants to drop it at the Owlery- so Jenny is left to her own devices. Bored, she examines the forest. It's only supposed to be unsafe at night, right? It won't hurt to go wander around a little in search of unicorns. She won't go very far.
And if she's lucky- unicorns.
Half an hour later, Jenny is deeply regretting her idea. She is completely lost, and the forest has gotten much darker and gloomier. She would go back, if she had any idea where to go. She's taken to making little piles of rocks, to attempt to mark her way; unfortunately, so far all this has told her is that she is definitely going in a circle.
The next time she re-encounters a pile, she branches out to the left instead. She's pretty sure she came from that direction, so maybe-
Cold.
Jenny is friends with Miranda. Miranda has been compulsively researching Dementors all year; she knows what it means, this cold, the screaming terror. But it's so much worse than anything ever, ever said it would be. She's frozen to the spot, unable to move, brain screaming in terror.
And then the Dementor appears. Slowly but visibly, it approaches her. Is it bigger than the books said they should be? She thinks it is. It's already looming and it's not even close.
Frantically, crazy with fear, Jenny does the only thing she can think of- she shifts away her mouth.
The Dementor stops, seeming to hover in place. Jenny stays frozen in place. The Dementor doesn't seem to be planning to Kiss her... but it's not moving, either, and she's still stuck.
Oh, God. Now what?
"I don't think a really Dark wand could do a Patronus at all, let alone a special Dementor-busting one," opines Miranda. "Anyway, let's get dinner and tell Alli and then go see if they'll let us visit Jenny."
Alli is awaiting them at the entrance, not particularly patiently. "What. What. You've all been missing all day, and Jenny's in the infirmary, and I had to be told by an older Slytherin who thought I did it and it's all part of my," air quotes, "'evil plan for hanging out with you guys.' And... and..." she throws her hands in the air in angry exasperation. "What is going onnnnn?"
"Jenny got lost in the forest and cornered by a Dementor, and when Emma found a professor to help look for her me and Karen were with him and we came along, which was good because it was a giant one and he passed out as soon as he saw it and I killed it with a huge Patronus from my chimaera wand," reports Miranda.
This earns her a few good seconds of blank, confused stare, before the scowl returns. "If you're pulling my leg, I swear..."
"They don't die until Miranda's Patronus goes up to them and squeezes them into nothing and all that's left is a cloak," says Karen. "She really, really did it. It was amazing and she's not lying."
Alli raises an eyebrow. "That's an awful lot of insisting from- y'know. You two," she says reluctantly. Neither of them is normally this... fervent, about anything. "If it happened- if- then that is stupidly stupidly cool and Miranda, thank you for saving them." She looks at them suspiciously. "But I might not believe you until I hear it from a teacher," she warns. "I mean... still. Giant Dementors at Hogwarts. And if you are messing with me and Jenny, I dunno, hurt her ankle flying, man are you going to catch it."
"We aren't lying. Come with us to visit Jenny after dinner and ask her if she's - talkable-to yet. Follow me up to the faculty table between dinner and visiting when I ask Professor Reed when she wants to meet to test my chimaera wand."
"Well, yeah. Visiting Jenny, duh." She pauses. "Should we bring something? I dunno, does she need any of her stuff?"
"Well, you have the same classes as she does, so you can bring her assignments, unless you think they'd make her relapse," says Miranda. "I'm sure Madam Pomfrey is drowning her in chocolate. I think there's a spell to conjure flowers but I don't know it."
"I think it's something about orchids...?" Emma says slowly. "Mother uses it sometimes when she has people over. But- yeah, I can bring homework."
Alli's method of kindness: try to delay your homework from reaching you as long (legitimately) as possible.
"Food!" Alli agrees cheerfully. Lunch looks good today; she is happy to dig in. Potatoes nom nom nom.
And when food has been et, Miranda goes up to Professor Reed and says, "Professor McGonagall wanted me to make an appointment with you."
"Hello, Miranda. Yes, the Headmistress mentioned," Professor Reed says. "Something about an unusual wand, wasn't it? During the day would be best; do you have time tomorrow before class?"
"After breakfast will be fine. I'll see you then." She smiles slightly. "And Miranda? I was encouraged to remind you that I was, and I quote, not planning to spontaneously abscond with your wand."