Amy is exploring a graveyard, looking for vampires to Slay.
"Oh, yeah, hey! And you're the how-secret-do-you-want-to-be-about-it-anyway?"
"My current precautions are mostly "don't say the word in public". Other than that, not much really."
"Cool. How d'you want to have met? Do you have a standard reason for being out in a cemetery at night?"
"Maybe we just met in the park? Or, here, even? Standard reason - no, not really, I'm good at making things up on the spot."
"Right, yeah, we have standard answers to stuff 'cause there's four of us and it'd get awkward if we all told our parents different stuff, or tried to make something up on the spot and said different things at the same time. Can't be here, my brother never comes here, but park works fine."
"Alrighty. Park. Can you help me find this one herb I'm looking for? The organisational system is really confusing, well, at least to me."
"It's confusing to anyone remotely sane, they're trying to alphabetize it in like three different alphabets at once. I can try!"
Nightshade, jack-in-the-pulpit, spearmint... "So I hear you get, like, prophetic dreams."
"Uh-huh. As I said, they're always nightmares and not very helpful and so on. Why?"
"Time-traveling information seems overpowered even by magic standards! We should figure out a way to make them helpful."
"Yeah! Sure would be nice, especially if it made them, y'know, a bit less nightmare-y."
"Oh, yeah, that too. D'you know they're dreams when you're having them?"