By all accounts, the shopkeeper does seem human. Short sleeves show visible skin, no visible ball joints, smells human, and seems to be breathing. She wears an apron as well as part of her outfit, her face obscured by a white veil.
Mosic commented noticing the sparkle of presumably jewelry underneath the veil, but definitely not a black mask.
This kind is the most lifelike of Morgana's dolls. They generally have no particular combat advantages, but are particularly effective at subterfuge. The most identifying trait for them is the jeweled circlet they wear, eyes that seem oddly dull or distant and unfocused, and being colder to the touch than might be expected.