A few punishments more,
Having her walk directly behind me with eyes down not allowed to touch me in any way, since a tenet of mine is that she is to walk with me holding my arm, hand or having physical contact with me at all times that we walk in public. That one seems to kill.

Another is too make her wear very old very housewifish clothes that will make her look and feel like a run of the mill nothing instead of a loved sub/slave. It will show her what she doesn't want to be.

These with the others posted here should work but again know what she hates and use those too.