It is quite common for diabetes management to require adjustments over time as the body changes. Since her blood sugar levels are not decreasing, she should consult her doctor for a personalised review. Depending on her health profile, her physician may adjust her current dosage of metformin or introduce other generic medications such as sulfonylureas (like glipizide), SGLT2 inhibitors (like empagliflozin), or DPP-4 inhibitors (like sitagliptin). Please do not start or alter any medications without a professional prescription, as her doctor will need to perform blood and kidney function tests to safely choose the best treatment plan for her.