The bad news is my sister is still in the cardiac ICU. The good news is that she is at a different hospital than the last time and we have done a wholesale, and permanent, substitution of her medical team. We are not a litigious lot and for that her old medical team should be on their knees praying to whomever they hold holy.
She had a transesophageal echocardiogram (effective, but no fun) which gave a clear enough picture of her heart that they felt comfortable doing a defibrillation. For the first time in weeks her heart is back in rhythm and is her heart rate is well below 100.
She is too fragile to do the radiation treatment now, so we wait. But we feel much more confident that her health will be closely monitored and the procedure done in a more timely manner than before.
So to any and all who sent a prayer out there into the universe - I thank you.