Ameiko is only wearing locked wrist shackles (which can be picked) attached to a chain, which disappears into the ceiling. All in all, that is merely a restraint.
The metal bucket/kettle above her is connected on either side to metal brackets where the bucket's handle would normally be connected. The metal brackets are vertical and straight, and also disappear into the ceiling, allowing the bucket to swing. Currently, it is still.
Other than the obvious option to somehow open the lock on the shackles, ideas on how to disarm/dismantle anything else are entirely up to you. The situation is still evolving.