Well, again ... Is there an example of a female wizard in traditional myth or fiction? I have never heard a rule that wizard means male and I do not believe it would be incorrect to refer to a female as a wizard, but as far as I know, there are zero female wizard citations in any English-language fiction or myth more than 50 years old. I specify English language to filter out recent translations that use the word wizard. I specify more than 50 years old to filter out comic books and the flood of post-Tolkien fantasy novels. Regardless of the fine points of word origins ... Show 100 non-Destiny players the NPCs in question and ask them to guess whether they are called witches or wizards and I suspect at least 80 would say witch.