Yeah, it's hard to capture "tone of voice" when merely posting text. 🙊
It sucks that there is a "drag factor" that comes with their prohibitions. As you suggest in your mother's case, even if they repealed the blood doctrine tomorrow, many would continue to follow today's prohibition, because to them, it was always Jehovah's will. It was such for all their life, and a change in policy wouldn't change their lifetime of perception that receiving a blood transfusion would be wrong in Jehovah's eyes.