My sister is 14 years old and has been diagnosed with Type-2 diabetes. She developed…

My sister is 14 years old and has been diagnosed with Type-2 diabetes. She developed stomach pain, and her sonography report shows fatty liver. Her three-month blood sugar report is also 9.7. The doctor has suggested insulin injections to control her diabetes. But she is extremely stubborn and refuses to take the injections. Are there any other medicines or ways that can help to treat her diabetes?