Stress seizures at 14 head rotating 20-30 a day

please help! My daughter has ataxic cerebral palsy, dystonia, speech and language delay, high high frequency hearing loss(recently fitted and operated on for cochlear implants) and epilepsy however been taking Carbagen carbamazepine for many years to control them, she also takes clonidine, baclofen and circadin to aid sleep. We have had to change to Tegretol Carbamazepine and since the change I’m medication she has been having what is diagnosed as stress related seizures, they are progressively getting worse, head swaying, arms shaking, eyes go funny as she explains all different colours she falls and her head goes down, these can last 60 seconds to 5-6 minutes she does not know where she is after the seizure etc I’m just wondering if anyone else has had this affect from taking Tegretol. We are trying to source Carbagen from the US through our local Drs