Accident with company car, bad guy doesn’t report…

Hello guys, it’s been a long, long time since I had an accident, so I have to ask on behalf of my wife, she hasn’t had an accident yet, and so we are absolutely amateurs in this regard. Short history: My wife was on her business car (my wife is self-employed) on Sunday morning the 01.03. private. On the way suddenly someone drove without blinking out of a parking gap and my wife drove the other car frontally into the side. Police called, is t yes a business leasing vehicle, and the police found as a matter of fact that the “parker” neglected the duty of care when driving out of the parking space, issued an accident arc and the driver of the opposing vehicle was warned with 35€. At the description the youth, who drove the car, made a little theater, but for us (and the police) the situation was undoubtedly clear. Therefore the warning. Since the car was not ready to drive, we have the A DAC called him and he had towed him to himself. We called our workshop and ordered them the following day to have an expert report and to have the car repaired in case of damage recognition by the opposing insurance company. The damage amounts to 10,500€ Today (03/09/2015) our workshop told us that the insurance company would not give an OK because the bad guy had not yet expressed himself. Question(s): 1. How long can this game be 2. We don’t actually need a rental car yet, we can claim 50€ a day of loss of use compensation, i.e. in principle easily earned money. 3. In the middle of next week, however, we absolutely need a car, if the car was finished by then, would be great. 4. For security reasons turn on a lawyer, or wait a week for the first time? Don’t want to shoot guns at sparrows right now, in principle not much has happened. About questions, would be nice if someone could help us.