Administrator a minor problem, perhaps threatening the girl that only wants to go home with never being able to is a bad idea, considering removing her contracts wouldn't lower her power, think logically her contract with the cultivator could be removed but not her knowledge or ability to cultivate she's been using the power for around 400 years, but even if you can do so what would happen if the broken girl couldn't ever return home when that is her only reason for sanity, that's right the end of the world