Hi... new here, scared dad... EEG abnrml in 6 yo girl

Hi everyone. Let me begin by saying I'm scared like I've never been before, and am pretty emotional (and often overreactive). Sorry if this is a little bit of a ramble. The story so far: About 6 to 7 months ago, we noticed an odd facial expression in our daughter (5.5 at the time) which was/is limited to a very brief (about a second) motion in which both eyes roll back and her eyebrows raise. It looks almost like she's being snooty! :) At first we thought it was just something she was imitating, and over the months it hasn't particularly increased in severity, though it may have a little and we've just not noticed it. A few odd things about it: it barely seems to happen when doing certain activities, such as when she's watching tv, drawing or coloring, or reading. Other times we see her do it while "contemplating", such as when she's switching activities. It happens most when she's waiting in anticipation for something, such as at a birthday party while in line to limbo or waiting for a balloon animal, and happens frequently while speaking with her. She might go ten minutes coloring without us noticing, but then we ask about dinner or something and she'll do it 3 or 4 times. When we first brought it up to our pediatrician, he said it was most likely a tic. I asked if we should see a neurologist at the time (and wish we had) but he sent us to an eye doctor instead. Argh. The eye doctor said everything was normal, but we already knew her vision was OK... So at our kids' annual a few weeks ago, we brought it up again and was advised to see a neurologist (duh) and this moring we went for the EEG. The EEG was abnormal; I got really scared when the tech asked my daughter, after one of the strobe sequences, if she "felt funny". I asked and the tech said that the EEG was abnormal and a few particulars that I picked up (while feeling a bit sick) was "right frontal lobe", abnormal during photic stimulation, polyspike, and slow-waves. I came home and began searching around, basically tiring myself out. I'm feeling emotionally drained and am running the full gamut of emotions from "it's probably nothing" to... well, everything else. Other than this, she is normal athletically, very smart (one of the top readers in her class) and very good in art... just basically a great kid. We have to wait until Tuesday to schedule a meeting with the Neurologist, at which time I'm guessing he'll schedule an MRI or something. The waiting maybe is the hardest part. On me, anyway. (My wife seems to be doing fine... ) I feel like I'm whining a bit here, since many of you have far more going on...and while running through these emotions, I'm feeling seflish, guilty about it being somehow my fault, guilty for not wanting to accept this will affect our lives, scared, angry, furious, anxious... everything. I'm not expecting to read someone writing that they know exactly what this is, and will go away... though I'm hoping for the best, of course. Beyond the possibility (or certainty) of epilepsy, obviously, are tumors, and whatever else may cause this. So, thanks for your patience in this ramble and I appreciate any comments or advice you may have. Thank you! Andrew