He starts an automated test and gives the stream of summons his full attention, and gets one a moment later.
"AAAAAAAUGH!" she exclaims, flinging herself backwards from him.
"What are you going to do? How'd you hijack my spell?"
"Don't try to fucking gaslight me! This is not a summoning circle, it's a divination circle!"
"It's a divination circle, look at the compass points!" she says furiously. "I don't know how you got here or why you want me to think it's my fault but so help me if you don't cut out the bullshit I'm marching straight to the USADI and I don't care if they draft me for it!"
"I can't even think of how that would be a trick but I'm not stupid enough to think that means it isn't one." She shakes her head. "I didn't even cast anything. I was only half done and you appear in my divination circle like you're the demon of the week and it's my fault, what's your deal?"
"Oh, poor you, show me on the doll where the other forces of darkness touched you."
"I'll start to call the fucking USADI if I can't reduce you to ash myself if you twitch wrong, the only reason you're still standing there without goons coming after you is all you've done is talk and it's just barely possible that you're a mutant from a neutral species or some kind of undocumented somethingorother."
"I did not summon you it's a divination circle. United States Anti Demon Initiative? Black uniforms, stupid hats, stompy boots, ring a bell? You speak English with an American accent, where the fuck would you have got that without hearing of the USADI?"
"Which I was not doing. Because this. Is a divination circle. Observe. The compass points. What are you if you don't like the catchall term?"
"Have you or have you not caught on to the fact that I think you are up to something and do not care to take instructions from supernatural creatures who are up to something. Is that not clear."
"Now, I haven't heard of fairies outside of cutesy kids' stories so I'm not sure how long it's going to take me to find reference materials on what the heck you are. If you'd like to give up this con as a bad job and shoo, this'd be a good time."
She sighs. "I could maybe put something together with what's in my bag that'd do it." She opens up her bag and rummages. When she leans over her shirt hikes up enough that he can see a water pistol on her belt.
"Izzat a co'puter?" she asks around a lens she's holding in her teeth while she sorts through baggied herbs and vials of things with both hands.