They can also physically hold someone in contempt.

As in call her back in appear in front of thw house, then just have the seargent at arms lock her up in some random room ‘until she releases the unredacted files.’

My understanding is that this is considered non punitive and therefore non-appealable or even pardonable.

I believe all it takes is a majority vote, which considering 427-1 vote on the initial act, I could see them getting.