Iyla had been watching him like a hawk, her eyes never leaving his form and even making a mental note of what he looked like without his mask. There was no more hiding from her anymore, and as he went around- seeking a price, she found herself growing angered, but soon turned tepid as the shadows as she lurked- unseen.
Eventually, she caught him at the end of a one way street- cornered, and she, without anymore shadows to hop. So when his back was turned, she stepped outside, and she completely solidified in sunlight, and silently drew out a dagger from her side.
He'd feel the weight of the metal against the back of his neck.
"One move, I'll cut off your hair. A second move, and it will be your neck. Now... hand over that stone and I won't kill you."