Kay

 is a doctor/merchant appearing in Fallout 4.

Background
Kay used to be in a little community of her own until one day it was attacked. She tells the Sole Survivor that back then, she used to be a veterinarian but quickly had a firm grasp on patching up the wounded people left by the attackers at her community. She now resides in Bunker Hill and has set up her medical/vendor services there.

Appearances
appears only in Fallout 4.