High blood pressure. Something on this?

My mother was apparently asymptomatic 2 years ago and then sometimes began to feel fast heartbeat in lying down position. Since then she has consulted a doctor now and is under medication for high blood pressure which appeared to be normal after a 10 day course. The doctor has advised the previous tablets along with some other tablets as a 2 month course after the required blood tests. After assessing blood tests I found that there is a slight increase in the ldl cholesterol and tsh hormone which is normal at this age I feel. Is she supposed to continue the two month course as I feel it is unnecessary. The body should not be habituated to the blood thinner or antihypertensive drug and this is the main chief complaint of the patient that she is not willing to continue the tablet lifelong. Can you suggest something on this? I doubt the diagnosis of the doctor. Currently blood pressure when measured is 110/84mm Hg