Eh, Temi was keeping hers in the mini-braids at the time, which cuts down on shedding.
If Artemis's hair is still in mini-braids by the morning after shared shower, she'd better start checking to make sure Kory isn't an imposter.
"Nike" would have to come in through some kind of audiovisual thing first. Like an animated Wonder Woman series or something, and then you could go out of your way to pronounce it as "nee-kay" until it was driven so wholly into people's heads that they wouldn't even make the shoe connection the first time they saw it written.
Or you could just spell it Neke, something like that.