Call the Name of the Night, Vol. 2 (manga)

Unable to speak to strangers due to her affliction, Mira lives a mostly solitary existence-until a visitor appears on her and the good doctor's doorstep. With a cute, fluffy goat-like look that calms Mira's anxiety, and enchanting stories of a mysterious object, the visitor quickly captivates Mira's attention, for better or worse...