Decades ago, when I was an elder, (OMG I can't believe I ever thought that being an elder was a good thing) a young sister accepted a blood transfusion. She had 2 very young children at home and certainly didn't want to die and leave her kids motherless. When the elders were informed, we formed a committee to investigate. I was on the committee with 2 other self righteous elders! She admitted that she caved under "pressure" (AKA common sense based on medical science). We "gave" her strong counsel and private reproof and she was not df'ed.
Moral of the story:
It's easier to ask for "forgiveness" than to ask for permission!
just saying!