Need to consult an ent doctor at the earliest. For quick symptom relief tablet vertin 16mg can be taken once . Need to get few investigations done for final diagnosis

Vertigo can be cause of inner ear disease . The status Of the ear should be evaluated . If she is suffering from a condition called BPPV ( benign paroxysmal positional vertigo ) , she has to be advised Epleys Manuever. She can be put on labyrinthine sedatives if too much symptomatic like dizzy . So main thing is to understand status of ear , rule out other cause of inner ear disease that lead to dizziness like acoustic neuroma , vestibular neuronitis etc . More than treatment , proper diagnosis is the right option .hope this was helpful

Consult ENT specialist, Dizziness could be because of multiple causes therefore proper history is very important in treating vertigo.