The oil staining you see is more than likely the inevitable oil spills from removing the oil filter during an oil and filter change. The fact that there's no fresh oil or spots where she parks it is a pretty good indicator that it doesn't have any significant leaks.
The KBB is a rough starting point for negotiation - if the car is extremely nice with low mileage, it might be worth the asking price.
The KBB is a rough starting point for negotiation - if the car is extremely nice with low mileage, it might be worth the asking price.