A elderly relative went to look at a car in a dealership after making an appt to see it. It was a 2019 model with 7000 km. The salesman said he couldn't show it but that another model had arrived in a 2018 with 13k more km on it. He brought her for a test drive in a 2020 model as the 2018 one was not ready for driving. He said the 2018 was the same spec anyway. He proceeded to sell her the 2018 one and she paid over 500 euro. She had second thoughts after leaving and now wants to look at other makes. She is not happy with the price of the trade in value given on her 2012 car. The price of the 2018 is similiar to the 2019 she was after. She meant to bring her daughter with her while viewing but instead went alone and now regrets it. The car can be bought for at least 2k less in other dealerships. She felt quite pressurised to buy. What are her rights ?