Kaufberatung old 911er?

Hello, maybe you can give me a few tips. Bzw. my mother, because she wants to fulfill the dream to drive a Porsche at the age of 50. She absolutely wants a 911, because he likes her of the shape so much. Actually I wanted to talk her out of it, because she drives a little car and in my opinion also does not drive at all sporty. But did not use anything, she absolutely wants a Porsche. Since the car is now in any case bought I would like to inform myself, what there Maybe you can give me a few tips and suggestions which models are good and what you should pay attention to. So it should be an older model. I think 10 to 20 years. Motorization is not so important, at the moment it drives a small car with 60hp and is not dissatisfied with the thing. It’s important that the look is good and you like it. You know what you have to pay attention to when it comes to tax and insurance as much as possible. How about the new exhaust emission standards? Running list would be about 10,000 km per year. Someone who repairs the car if necessary would have me at hand, so if something breaks, it wouldn’t be a broken leg (if you get the parts without any problems). So what kind of special model should you look for? I am grateful for all the answers. Greetings