First of all, maybe your price is already very low, because it can't be lowered any more, or when the car buyer has no money to earn, she will be so impatient. You can think of this as a good thing. If she is very, very kind to you, she may make a lot of money for you. At least she didn't make your money. This is her loss.
Secondly, she is also a part-time worker. Let's buy a car. We are God, and she is a little granddaughter. If she has good financial conditions, she won't be a little granddaughter.
Third, check the quotation of this car online to rule out the possibility of provocation.
Fourth, complain to her and send a text message to find her leader. Of course, complaints can't play a positive role in promoting your car purchase, but at least they will make you feel depressed. Think rationally first, and then ask them to apologize for the extreme injury and anger of the leader. Of course, you can't really get angry and improvise. Maybe you will have unexpected gains.
I'm glad that your relatives can live a comfortable life by car instead of walking. Millions of cars may be business cards to show capital, but those who buy tens of thousands of cars are the ones who really enjoy material life to the maximum.