Njoki snorts, not because she's disbelieving, but because she's been startled.

"Sorry, didn't mean to intrude. I just came off a long run and my mind is a good forty feet back behind me." Still breathing heavily from the run, she seems a bit confused and curious. She saw the lightning and knows what she can scent off him, but it's still not adding up into anything she's ever come across. In the dim light, he might notice her eyes reflect green like a cat's would.

"I'm 'Ki from Earth."