Number one you can't roll…
Number one you can't roll back the odometer on a Prius. You can however get a replacement display head. If that's done of the dealer you have to leave your car there for a week while they order the new head would correct mileage on it matching yours. But if you buy a repaired or used one from another car it's going to have the mileage that that display head has. Anyway if you read the thing she got the correct why was that's on the odometer The DMV verified it