There is not enough information given to find the specified Kerbweight Aileen.
What year is the car, is it petrol or diesel, automatic or manual transmission? Vehicles manufactured by Mitsubishi are generally considered to be reliable (mine is!) and the sliding door should make loading the vehicle nice and easy.
I should imagine that the Sportsgear is mid range, between 1300-1500 kg which should be ok as a towing vehicle but your friend should check the kerbweight before buying a caravan.