Thanks for your query.
I have gone through your query and understand your concern.
You should look for causes of generalised edema such as kidney disease,heart disease,liver disease and hypoproteinemia. You get her heart function test,kidney function test and liver function tests to see the cause. Diabetes status should be looked by blood sugar tests. She should visit a physician.
Hope your query get answered.
Wishing you a good health.
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