For now, yes, I do. Missy is currently being used by them outside the storyline, so nothing is contradicting anything. I asked to use her as an alternative fixer to Sweetie, in case Twilight pulls the hermit card again. Which I was clearly right about. Spend enough time around people and you can predict their behaviors.
Twilight's been through a lot of garbage since she got involved, six years of things always blowing up in her face, villains using her, can you really blame her for hiding when things get bad? She's more cowardly than Fluttershy ever was. The first step in /my/ idea was for Missy to fix Sweetie, and send her on her way. Like, nothing bad. I was then going to see what the actual roleplayer wanted to do with Missy before I implemented anything further. But she would be an easy fix for this...waiting problem. Because I'm getting impatient too.
I literally expected this problem, as Twilight is an absurd rarity to see around.
I'll spoil this for you, Missy was not going to turn you into a Cyberpony. Not right away. She's more about getting you to trust her before she shows her true colors. So she was actually going to fix you. Because I KNEW Twilight would run off and hide again when things got scarier.