Inflamed pancreas

My wife was said to have inflamed pancreas before gallstone surgery. A week to the laposcopy surgery, she was diagnosed with high bloodsugar. Her bloodsugar was between 18 and 25.She was put on gliclazide and bloodsugar has slowly come down to between 4 and 8 in 4 weeks.
Can anyone advice if the high blood sugar will reverse should the pancreas come to normal.

Thanks