"Oh, um..." Tara fidgets a bit on the spot. Magic isn't something she's ever really had to explain before, besides giving dire warnings. Magic isn't really something anyone's ever wanted her to explain before.

"It's just...n-not many people can use magic, back home. Not...really. S-Sometimes they can fake it, but it's supposed to be s-something you're born with. A-And it's mostly humans. Demons d-don't really have it. I guess they...don't really need it."

It doesn't occur to her to say anything other than "demon". Nonhuman things that aren't vampires are demons. They might have their own specific names, but they all share the same umbrella.