Thick problem after buying a car

Yes Good day to everyone here, I have the following problem: I and my girlfriend are both 25 years old, both unemployed and have 1 child. We wanted to buy a used car as a first car, for a maximum of €3,000. We need the car so that my girlfriend will come to education in September and we can drive our child to the day care center. So now my girlfriend, behind me without talking about it, bought a VW Polo 1.6 TDI 2013 70,000km, at the VW Autohaus. (The purchase is In the evening my girlfriend came home and then told me her success story and that everything is already signed and paid for. So my problem is now: 1. The car is too small for us. As a family car I thought about a car, if you already spend 11,000€. 2. The car was a company car and company cars are treated like dirt, because you s I have to pay off the cart now if I’m going to work, even though I never wanted to have it. 5. The cart is just an ugly woman’s car, where nothing fits in, with 90hp, if I had had had the agony of choice, I would have gotten a nice Audi A4 Avant for less money. So and now I would like to know your opinion. How would you react in my place? If I had not had to pay for it. Can I still exchange the car? Should I give it in payment for a better car?