I've read once an adaptation of Donkey Skin, in which the heroine was king's step daughter instead of actual daughter. Have you met often with such change?
Yes, I've read it once, in an Irish version of the tale called The Princess in the Catskins.
There are also some bowdlerized retellings of Perrault's version that make the princess into the king's adopted daughter or his ward. Andrew Lang did this in his retelling, and so did the Let's Pretend radio adaptation.














