She smiles at that, at least, and then very slowly runs her hands through the motions. She taps her lips twice, her right fist closed with the thumb against her lips; then holds her right hand across from her chest, palm upwards but hand closed as if gripping, then both hands held in front of her, vertically and parallel - sliding downwards.

Then she moves again, letting the SCA translate.

That's more like 'secret-holder', but it will do, for now.

Then she slowly repeats the gestures.