A trad kilt made for a woman (piper or Highland dancer) is made exactly the same as it is for a man because it's a proper kilt meant to conform to the uniform standards of either a pipe band or the Highland dance rules. Just has more shape, if it fits properly. Fringe edge at the right hip.

Most kilt skirts that I've seen (which are not kilts and are not made with the same construction techniques, amount of fabric, etc.) most commonly have the fringe edge at the left hip.

Barb