There are multiple programs, charities, and generous people who would help out if she needs it. The surgeons and their staff all took the Hippocratic Oath when the signed on but that went out the window with today's "take the money and run" ethos. Surgeons denying vital surgery at the last minute due to indigence is prima facia evidence of their corruption.
They are military doctors. It’s not like she isn’t better off not receiving military medicine.
As has been pointed out, these are military docs working in a military hospital. They are probably very young, recent med school grads paying off ROTC debt by doing their service years. They are NOT being paid as a surgeon in private practice would be. AND, they don’t call the shots on going forward with the surgery or not. That is a hospital administration decision.
One administrative consideration is that the woman was not covered at the time of the scheduled surgery. If they proceeded and there was any kind of problem, they’d have had a massive liability, in addition to not being paid for the services rendered.
Your calls of corruption are misplaced.