Dizziness can be caused due to cervical spine
of due to inner ear problems. Things to be seen are, does she have any hearing problem, if answer is yes, go to ENT specialist
immediately. If answer is no, you can relax, it is only cervical spasm. She needs some moist heat, with soft cervical collar
for a few days as a rest. Give her some muscle relaxant
and also medication dizziness.