Any diagnosis that we will make on here will probability be wrong without seeing her. Go to a doctor

Did she take any medicines or substances ? From the symptoms that she have , it could be low sugar level in blood. Diabete and more. These are the symptoms of diabete: Feeling dizzy, shaky, or lightheaded Feeling nervous or anxious Having a fast heart beat Sweating or having clammy skin Feeling tired or confused Having a headache Feeling irritable

How is her breathing and any palpitations or tachycardia? Past Medical history? Social History? Medications? Test that can be done: ECG BMP CBC &CRP D-dimer CT head w/ and without contrast Differential: Anemia Electrolytes Afib or other arrhythmias Brain tumor Etc Need to see DOCTOR