The insurance company of the at-fault and not at-fault parties involved in an accident is a fairly common occurrence. In most situations there is no conflict of interest that causes either party problem. Both motorists having the same insurance company can even help at times since the sharing of information should flow quite easily between the claims adjusters assigned to the case.

If you believe the insurance company is not doing all that it should because of some reason you can contact your state's insurance regulatory body.