Is lying about your age illegal?

i got in a car accident a few weeks ago. i went in a ditch. i had a passenger in the car who was 17. when i mad a claim to my insurance to try to get reimbursed for the tow truck they asked if i had a passenger in the car. i said yes and said she was 17. so now they need to contact her and make sure she was not injured and talk to her parents cause she is under the age of 18. if she called to verify that she was not injured and also said she was 18 not 17 would that be illegal? we just don't want her parents to know we got in an accident. so to avoid them needing to talk to her parents we want to say she is 18. and need to know if that would be against the law. any help appreciated, thanks.