I am Dr Ravinder Sharma ENT surgeon. On the basis of information provided it appears your wife has deviated nasal septum
can present in many ways . To name a few are nasal obstruction
, headache, nasal discharge, anosmia(inability to smell) and so on. I would like to have a look on the scan to comment further about it.
ventilation may be affected due to deviated nasal septum which can be a cause of headache.
I hope this answers your concern