Hello. Thanks for asking from HCM.
I can understand your concern. It seems that you have a good knowledge of medical sciences or you are a doctor. It is really good that you want another opinion to help her.
Now coming to the symptoms, she is having photophobia, stereoscopic vision problem and vertigo symptoms. If all these are occurring after head injury, fracture of
temporal bone causing damage to labyrinth and damage to
occipital lobe or visual apparatus should be ruled out. It can be checked by CT head after consulting from neurosurgeon.
Another cause can be front-
temporal lobe damage along with temporal
bone fracture leading to psychiatric symptoms along with vertigo. For confirmation of vertigo, check her vestibular and cerebellar function.
Consult doctor for evaluation.
At home, you can check her ear for any discharge/blood and hearing loss if she is co-operating. Avoid bright light. Do not give drugs which can cause sedation.
Thanks. Hope it will help you. Take care.