Spoilers!
Although honestly, Maleifica hasn't really been something I've been considering when it comes to immediate Kaleidoverse narrative stuff. I'm honestly not sure if I'm ever going to use her.
If I do, it'll need to be when Vanta is getting desperate for allies which is definitely going to happen at some point. Famine is dead, Death is missing and War II isn't exactly working out as she wants.
She's running out of emissaries. Maybe someone a bit more opportunistic might be one of her only options. Although it's not her only option...
So basically #9C9C9C ain't canon until she is.