Guard: As you can see ma’am, they won’t be causing you any more trouble.
Granny Smith?: Chained and muzzled? Now that’s what I like to see! Serves you harlots right! Attackin’ a poor old lady.
Guard: If you could just step this way, ma’am.
Granny Smith?: What?
Guard: We need to have you checked out by a physician and document any injuries for prosecution while they’re still fresh.
Granny Smith?: Well alright, but only so they can throw the book at you five harpies! I hope they make this quick. I need to get back to Sweet Apple Acres. Was just mindin’ my own business, shopping in the market, and the moment I round a corner- WAM! Clocked me like a tee-ball, they did. Is this going to take long? Well? Why did everypony stop?

Guard: Well you see, ma’am, when you walked through that magic disabling device it seems to have turned you into a changeling.

Hissy McFit: Oh… Could… Could I just go quietly and… non-violently? Thisss hasn’t been a great day for me…
Guard: I don’t see why not.
Hissy McFit: I really did get hit in the head. And then stuffed in a trunk. And that was just today. The other changelingsss in Ponyville were pretty mean too.
Guard: Why don’t you get your thoughts together and tell us all about it in a few minutes? [Pause] Send a detachment to Ponyville and arrest the Elements of Harmony. Lyra, you and your friends are cleared for the throne room. All of you, spread word around the castle and secure the parameter around the throne room. Balcony included. The rest of you, on us. We’re going to bring two royal changeling imposters into custody.

Lyra: Thanks for trusting us enough to prove our innocence.
Guard: Foalnapping was never your M.O.. Now, you understand we can’t imprison the Princesses without explicit evidence of their involvement. At best we can occupy the throne room and follow them against their will.
Lyra: Yeah. This is the hard part.