She has a somewhat unusual but not unattractive face - almost round - the bottom of her earlobe is almost level with the corner of her mouth. That shows up in the photo of her behind the vehicle and in both inaugural photos.
My guess is Bess Reagan, Neil's widow
Was it Bess? I thought Doria was Neils widow. Oh well. We both agree it was Neils widow. That's sufficient for me.