It was not the owner who was driving that day.
After Savannah rushed to protect Kaiden and fell to the ground, the car left quickly without hesitation. Clearly, this was a deliberate action.
Therefore, he ordered Garwood to look into it.
After the investigation, he found that the one who drove that car was a local bludger.
The bludger confessed under torture that he had been bought off and instigated to drive into a young woman at the hotel entrance that morning.
From his call records, Dylan knew immediately the one who planned everything was Charlotte.
Charlotte told the bludger that the young woman was pregnant. He was asked not to kill the young woman but just to miscarry her, so the police would take it as an accident only.