Audrey's first instinct...is not magic. She's not surprised about this. This is almost exactly what she's been afraid of finding, here. Actually finding it. That almost feels like a relief. She's glad she never found a key. Before now. She's frozen for exactly a moment, and then cries out to the only other person she thinks can help.

"...Pocket??"

She remembers herself and freezing charms after that, joining the others in their chorus.