My daughter is in agony with lock jaw, it keeps locking, ear pain and feels dizzy. Pls help as she also has panic attacks. Thx?

Panic. Not sure if she is on medications & what type. I would consult her prescribing doc. For possible adjustments & referral for thorough exam of her jaw complaints.
See dentist. Your daughter needs to be seen by a dentist or oral surgeon who treats tmj/tmd patients. Depending on other symptoms and history she will need to be on anti-inflammatory meds, steroids, a bite splint and possibly surgery. This all depends on the history and severity of the problem.