If budget is not an issue. Honda Civic VTI oriel prosmatec is the best choice. It has an immobiliser. All other safety features like air bags , Abs brakes are offered in this car.
Otherwise. in 1-2 million category. Toyota Corolla Altis AT and Honda city AT is best.
Altis AT is more expansive than Honda city AT and of course better than Honda city AT. But Remember Corolla is hot cake for thieves nowadays and it is the most stolen car in Pakistan. So I will recommend City AT. It's a nice car with very good fuel economy.
I will not recommend for JDM cars because they are used. New car is better than an old car IMHO.
Your relative should drive the car at the time when traffic is low to get hold on it. There is no such issue to drive a car in Islamabad. Traffic conditions of Islamabad are still better than other big cities.