Bad Omake Incoming:
She was a terrible person.
Mami reminded herself of this as she flew through the air with Sabrina, off to kill another witch and satisfy her drive for justice. Life had started to go so well once Sabrina had entered it, and Sabrina... well, she was everything Mami had always wanted. Exactly what she had always wanted.
She was a terrible person.
They danced through the Witch's barrier, casually ignoring the crab grass familiars to take down the Lawn-Mower witch, each wearing a headset that allowed them to communicate with each other in battle, and surf the internet outside of it; a wearable phone. Sabrina's actions were fluid, and Mami fought as if they had known each other for years, memorized how they acted.
She was a terrible person.
That night, as Sabrina lay on the bed, Mami waited for her to go to sleep. When she had drifted off, Mami slid out from Sabrina's arms and walked to her desk, where her computer ran with a baleful glow. And as she logged onto Sufficient Velocity and read the thread, setting out Sabrina's plan for tomorrow, convincing others to go along with her natural charisma and cool-headedness, she reminded herself once again.
She was a terrible person.