>>97113945In Morrison's version she doesn't have powers. It's to match how in Watchmen, Moore's intent was that no one has superpowers except for Dr. Manhattan. At the time it was still a Charlton proposal, Moore admitted he wasn't sure what he was going to do with Nightshade yet (by comparison he had more in-depth ideas for Captain Atom, Thunderbolt, Blue Beetle, and Question) but chances are he would've ignored her powers, same as he planned to ignore how Silver Age Dan Garrett used to have a magic scarab or how Golden Age Dan Garret used to take Vitamin 2X.
When Watchmen became all-new characters, Moore was free from having to use Nightshade and made Silk Spectre based off of Phantom Lady and Black Canary. IIRC Morrison picked up on that and had his Earth-4 Nightshade wear a wig, similar to how Black Canary used to wear a wig when crimefighting.
>Did Morrison literally just write it out, LMAO YOUR MOM WAS JUST CRAZYThat's pretty much it. It was probably a way to acknowledge and handwave how Nightshade was originally supposed to have superpowers.