Hello and welcome,
Thanks for posting your query.
Since your daughter had met accident 5 months back,Chances of mastoiditis
as well as tendonitis
has to be ruled out.
I would advice you to visit an oral-maxillofacial surgeon and get a thorough clinical evaluation done.
An OPG as well as LATERAL CEPHALOGRAM will help to rule out the problem underlying.
Take complete course of medications prescribed.
Avoid heavy forces on TMJ
and physiotherapic exercises has to be done.
Jaws has to be immobilized.