Right, Sorceress means a woman, but we can't say Adel is a woman only for this reason. We can say "Adel is a woman because in FFVIII, only women can be sorceresses.", but we can't say "Adel is a woman because she is a sorceress".SorcerESS as opposed to SorcerER. A woman, yes.
In addition I have to say that in the french translation, characters refer to Adel both with "her" and "him". Should she be a hermafrodite? O:
However all this is off-topic..stop it