My Mother's Blood Pressure Is 189 Over 110 And 73

My mother's blood pressure is 189 over 110 and 73 beats per minute plus her blood sugar has been high she's on Metformin 1000 mg tablets twice-daily and Carnival 12.5 mg one tablet every 12 hours I'm wondering if I should ask the doctor to up her blood pressure and blood sugar medicine she's hardly eating and trying to maintain low blood sugar but it's still maintaining high