EKG is electrocardiogram or electrocardiography. To determine heart electrical activity.
EEG is electroencephalography or electrical activity of the brain.
MRI is magnetic resonance imaging or a scanning of parts of the body including the brain.
Definitely have been through all of these plus many blood lab tests for seizures, sugar & cholesterol(heart), liver, and levels of medications.

EEG and MRI are usually done to diagnose the type of seizure or the part of the brain affected... I haven't had either done for about 30 years now, but due to get them done soon.

The doctors are not telling me anything just that she has seizure disorder but what’s the difference.

ok what age is hannah? if its a teen or a pre-teen, it maybe just her attitude. if you have a ipad or tablet or something with audio and video in it. tape her, with her permission. that is a easy way. then do to the dr with the tape or recording.

What is a EKG