This 'Doctor' seems to be the same kind of 'Doctor' at the hospital I used to go to.
Doesn't give a shit about the patient's lives. Bedside manner is literal dung, and only cares about her own personal benefits.
Wouldn't spare a man dying of thirst a glass of water, when she has a tanker truck full of the stuff.
She apparently let the old doctor die because Mu ordered her to save him? My understanding at least.