I read your question carefully and I think you are wise not to underestimate this episode and write here to ask for this panel s opinion. Judging from your description the episode might well have been an epileptic seizure. The cause of the seizure must be sought after with a clinical exam followed by blood tests, head CT or MRI and EEG. Afterwards it will be proceeded according to the findings of those exams and if a cause is found receive appropriate treatment if necessary. The list of possible causes is a long one, can be related to her drinking, metabolic changes in her blood, but also issues like infection, tumor or stroke which is why the exams are necessary. I hope everything will work out for the best, feel free to ask further questions.