Parker would eat her hat (you know--if she was wearing one) that the pendulum and the key are connected. And if one is halted, maybe the other will be.

She doesn't even attempt to argue--just automatically raises her forearm to protect her eyes against a flare of magical light.

There's a near deafening sound like the grinding of gears.

Or possibly clockwork.

"Well, I'm pretty sure that made it unhappy," she says, lowering her arm.

Now, let's just hope that it's unhappy in a way that's good for them.