Aqua and Arianna might be househunting in the next few days, so one of them might stumble across something. Ari's more likely to recognize some of it for what it is given that her family trains people to do this kind of thing. Aqua would just be very confused.
I don't think Ari's powers would set off anything, but if a witch is a witch regardless of type or intent the gris-gris bags might annoy her.