Greatwater Lake lost civilizations

hope you don't mind me intercepting!

Something is wrong. 
There is a scent near the border, followed by a howl which comes closer the more Zaahira listens. A female, one who smells of the Lake, but only faintly so. She holds a face that is nearly recognizable, yet still foreign. She is looming and ominous, a sight to behold, one that draws a rise of Zaahira's hackles and a rumble from deep within her chest. 

She is wary, but not yet aggressive. The line between intruder or friend is thin, and one Zaahira does not yet know where to draw. 
Who are you, and why are you here?