Mimilly
You may not have received the e-mail I sent you early this morning, so I'll paraphrase....
Seizures accompanied by vomiting are an indication of elevated intracranial pressure. I agree with the folks here who recommended a referral to a neurologist ASAP. She needs to have a complete neurological workup, including CT scan, EEG, and possibly an MRI. Fainting is never "normal", especially not when accompanied by seizures and vomiting.
There was a case in the Ottawa area recently of a young woman who had a tongue piercing a few months prior, and ended up with an abcess in her brain and bacterial encephalitis. The tongue is very vascular and the piercing allowed normal bacteria from her oral cavity to find their way to the brain - where the bacteria are 'abnormal' and dangerous - by way of the bloodstream. The initial symptoms were similar to your daughter's. I don't know if this is a possibility in your daughter's case, but if it is, do keep it in mind.
Love, Scully