There can many reasons for hyperglycemia, one of which can be due to medications which increase blood
sugar levels.
Due to incease sugar level body is susceptible to infections as it acts a. Breeding ground for organisms.
Can you give more history about vaginal itching? Was there any discharge ? Color? Any skins changes or blisters?
Most likely it could be a candiasis infection, but since your mother must have had menopause, hyperglycemia. More detail examination is required.
Next Steps
Give more history son that we can consult further or get a
gynecologist appointment for infection
& urologist For uti
Get ogtt test done. And get anti-diabetic medications
Health Tips
Avoid high glycemic food.
No sexual activity till the infection subsides