Final answer:
The most appropriate intervention in this scenario would be to administer a D50 bolus.
Step-by-step explanation:
The main priority in this situation is to address the patient's confusion, disorientation, and thirst. Since the patient has not taken her anticonvulsant medication and has diabetes, it is important to suspect hypoglycemia as the cause of her symptoms. Administering a D50 bolus (1) would be the most appropriate intervention in this scenario as it provides a rapid source of glucose to increase the blood sugar levels and alleviate the hypoglycemic symptoms.