"Of course she was! But don't worry, they picked her up - here, I'll guide you to her."
She gives you instructions to a particular part of a particular basement, where you see what you instantly recognize as Christy's old dress.
"So... this is where you'll end up, when I'm done?"
"Yep!" says Christy. "You too, most likely - this or dead."
"Great," you say.
"Oh, she's fine," says Christy. "Tuck her into me, so all three of us can talk."
You tuck her into Christy's sleeve, and hear a deep, feminine voice.
"Hi, Christy," she says, "and..."
"Rea," Christy replies.
"And you are... were?" you ask.
"Davina," comes the voice. "Glad to meet you."
"You too," you say. "Doesn't it get lonely down here...?"
"Oh, we're all hooked up," Davina says. "We've got an Internet connection, too. Plus, we can petition wearers we meet via the Internet, if we really want."
"...the other magical girls..." you ask Christy... "surely not all of their dresses used to be..."
"What? Of course they did! Except the very, very young ones. Lots of people train their entire lives just to become... oh, right, you wouldn't know..."
"Why wouldn't she know?" asks Davina.
"Long story," says Christy, "I'll tell you later. I think Rea and I had better get to work." You slip Davina out. "So anyway..."