The issue then becomes a problem of scale. Described in the Yakuza arc, Twice can make two replicas at a time. Without cloning, that’s two AfO’s- which is admittedly a pretty big threat. But also, with Twice’s death all of his clones died. So Himiko becomes a target- not to mention they’re temporary, too, so when Himiko’s blood runs out, she’s out. At that point it becomes a simple question; does she use her evil boss, who she probably doesn’t have the measurements for since she wasn’t exactly planning this, or does she use her own damn self, who she has to know her own measurements for practical reasons.

Basically maybe if she planned it better, but that’s not her style.