While you were thinking the worst part was ended, the reality was far away from your expectation. Strange felt of transfrom, feeling of weird melt of flesh and their reformation, was there again. However it was not only happened to specific body parts. Rather, it was coming from everywhere else except transformed wings.
Most of your mass under skin was being lost. It made you more capable not only flying but also feminie works. It was definately prooved by chest, making bigger breasts, still noticible while it seemed to be designed to fly with less mass. Meanwhile the same kind on feminizing was also happening above the shoulders. Vocal cords were losing low range of voice and adjusted to soprano, hair was getting longer, and also changed its color to skyblue fits well with the feathers. Also from crotch, genitalia went internal, inverted into female's one, reversing your role in reproduction.
Soon, "birdy" parts were followed. Lower body, untouched to then, was surely its turn. The forms legs becoming were doubtlessly avian. Their skin was solid hard and became yellow. Some long feathers growed from right up of new vagina to form bied-like tail.
The transformation finally overed, and you slowly checked how you changed undesiredly. Pants were already taken off as it was no longer fit on you, and oversized shirts covering crotch with outline of breasts. Shakin feet to take off shoes, you could see avian feet, with three claws heading front and one to backwards. Every aspect you could see was undeniable clue which showing you are a harpy.