Final answer:
Based on the given information, it is not possible to determine how much money Gina owed in parking tickets when she got a boot on her car.
Step-by-step explanation:
Based on the given information, it is not possible to determine how much money Gina owed in parking tickets when she got a boot on her car. The information provided only mentions that Grace, a different person, owned her own car and dealt with road hogs. There is no specific mention of Gina or her parking tickets. Therefore, without more information, we cannot calculate the amount of money Gina owed.