After listening to the latest review, I wanted to remind Glenn of the episode of TNG where a Romulan needed a blood transfusion and Worf was the only match. Worf refused to save the Romulan, even when the request came directly from Picard! He noted that he would do it if Picard ordered him , but Picard said he would not do that. not
There was also an episode of Voyager with B'elanna not assisting someone in a similar situation. situation
I've always appreciated captains not imposing their will personal matters, and this situation is no different. She actually has more leverage to why she couldn't comply with that request than the other two characters. Just my thoughts!!