About fasting sugar test. Wrong?

My mother (50 years old)has tested fasting blood sugar 15 days back she had the value 126 mg/DL.and after food she has the value of 180 mg/dl.she consulted a doctor through practo and the doctor suggested to take gp 1 tablets for 10 days and asked her to restest after 10 days.she completed the course and tested fasting sugar result after 10 days is 134mg/DL and after food 200 mg/DL for 2 days.again doctor prescribed her to take same tablet for one month.now she started taking medicine.what my doubt is what is the problem.?did she get diabetes?by using one month of these tablets will she recover(does her sugar values get to normal).we are confusing she is tensed about this.is it everything normal or anything wrong? Please help me