Designated family member means the spouse, child, grandchild, parent, brother, or sister of the owner of a new motor vehicle dealership who, in the case of the owner's death, is entitled to inherit the ownership interest in the new motor vehicle dealership under the terms of the owner's will, who has been nominated in any other written instrument, or who, in the case of an incapacitated owner of such dealership, has been appointed by a court as the legal representative of the new motor vehicle dealer's property.