@AZ__ ....And got killed right as she came back in the story.
Weird, huh ?
To be fair, Araki doesn't really forget.
However, he
does introduce plot-points and characters, then get rid of them/ never mention them again as soon as he doesn't feel he can make interesting stories out of them. (Remember when there was a shape shifting alien ? Remember when stands could shrink ? Remember when Fugo left the crew and was never even mentioned again ? Remember when Dio used hermit purple ? And so on....)
Just in case : I know that some of these have been addressed outside of the manga (Novels, interviews...), but what we're criticizing here is the
manga