Your wife is a Diabetic and she has not seeked medical treatment it in the past.
Now she as developed bedsores
Past is past.
Diabetic and wound care should go hand in hand.
Monitor and control the blood sugars very tightly.
Adhere to the diabetic treatment.
Wound and nursing care should be provided.
It the ulcers are left untreated there is a chance of infection and sepsis
It will prove dangerous to the patient.