Hi. Thanks for your question. I am a board certified neurologist in the U.S. I will be happy to help.
Pain can be seen in Bell's Palsy, and it actually is often located behind the ear. However, that degree of pain is unusual for Bell's Palsy.
It sounds as though she is having so much pain that it would be worthwhile to have her see a doctor, if for nothing else but to get the pain under control.
Of course, the option would also exist for the doctors to perform a brain imaging scan (such as MRI) to make sure they are not missing anything, especially if the facial weakness is getting worse.
The treating doctors would need to consider changing the medication to another if it is not providing any relief. Therefore, to answer your question, I do think your wife should be seen by a doctor again to reevaluate the situation.
Please let me know if there are more questions. If this has been helpful, please rate me highly. Bonuses always appreciated. Best of luck to you and your wife.
Yes, in that case I would advise going back to the hospital.
The degree of pain, and the worsening of the weakness are not typical for Bell's Palsy.
If a brain scan was not performed, it may be something to consider. You are welcome. Good luck.