Hi there. the doctors seem to be proceeding with caution. I can understand this. There is a lot going on, so perhaps even an echo would be a good test as its non invasive and gives good info on heart valves and heart pump function. Perhaps the docs will review things once the Edema is got under control.
Kidney function will need to be looked at too, but things will happen over a period. Its hard when you want a quick fix for your loved one, but its a game of slow moving right now. Be patient.
as you are aware things are complex , given that diabetes is also present along with hypertension.
The due in angio test can cause further kidney issues, so this is the main reason for the caution on angio test.
right now the best advice is to heed the docs decisions. They cant afford any setbacks, so they are not in the game of risk taking.when things stabelise and improve, the opportunity for further tests/ evaluation will arise. For now just be patient and give her all your support and love