<Snipped quote by Legend>
I hate to say it about someone’s family member, someone who many care so much about, but I think Misty is a time bomb. The nature of her being makes her nearly impossible to monitor, let alone reign in, and it’s only a matter of time before one of her drastic acts has dire consequences. And what do you mean Shinji is taken over? Like, possessed?
If it's any consolation, she's fairly contained in her Territory. But I agree with your assessment. As for Shinji, I don't think it's literal possession, but it has the same kind of effect.