Are the funds received from the car's insurance company, with whom its owner was insured, lawful or unlawful after a child was injured in a car accident and received treatment?

It is permissible to accept what the insurance company spent on the treatment of the injured child, as long as the driver of the car caused the accident, because the aggrieved party has the right to take compensation for the damage inflicted upon him from whomever the perpetrator referred him to, and because the payer (the insurance company) paid it voluntarily.