>>34313899>her hat, back, sleeves, pant legs and shoes have a wing-themed treatmentI'm going to believe that this is an entirely involuntary transformation.
Like, a perfectly ordinary office lady wakes one day to find that her coffee cup has a wing-themed handle, and it all goes downhill from there. Her bag somehow acquires wing accessories that she doesn't remember buying, and as the time passes, they slowly increase in number. She finds herself putting on a winged helmet instead of her glasses. Her entire wardrobe changes from plain dresses and skirts to wing-pants and wing-gloves. People forget her name and start calling her something that references the flying type.
Eventually, she herself joins them. Winona is born.