Weight restoration confusion...HELP!

Hello, everyone!

I am seeking some answers and some advice, but first, I'll present you all with a little background info about me.
I am a long distance athlete. I have been running competitively since my freshman year of high school, so for eight years now. I am currently running cross country and track & field for a university, and this upcoming school year will be my last year.

Two years ago, I wanted to be the best female long distance runner in the conference as well as both regionally and even nationally. I ran 400 minutes or more each week and restricted myself to a mere 2000 calories per day. I thought this would help me be faster and more fit.
Slowly, but surely, I began to dig myself into a hole, and eventually I found I dug myself in so deep, that this place, my body image, became my safe haven. This was what I had become accustomed to. Nothing else really mattered. My body, my ED (eating disorder), became my life.
Eventually, after practically barely surviving, still eating 1700 calories a day, but obviously not enough because I was barely maintaining my weight of 94ish pounds at 5'6", and no longer running competively because I didn't have the energy for it, I seeked treatment for my ED at an inpatient unit.
They helped me regain some body weight, along with a little bit of confidence. Now, I am mostly on my own, trying as much as possible to commit to the meal plan I left with from the inpatient unit to continue gaining weight, all with a little help from a nutritionist and a therapist. Unfortunately, following my meal plan can become somewhat difficult with my work schedule. Almost everyday I work, so I have to pack both my breakfast and dinner. Doing so doesn't present me with too many meal options. Nonetheless, I'm still eating both meals, packed with calories!

Anyways, after work last night, I had a snack right before going to bed (around 9:30/10pm), yet I woke up in the middle of the night at 1am, ravenous! I didn't want to get up, but eventually, I gave into my hunger and went downstairs to grab a snack, a nutrigrain bar. Soon enough, I returned to my bed, and tried to fall back asleep, but I still felt unsatisfied. I laid there for a little while longer, contemplating on whether or not I should eat something else. I surely didn't want to have to venture all the way back downstairs to simply find something else to eat though.

So, in the meantime, I pondered, WHY AM I STILL HUNGRY? WHY AM I NOT SATISFIED? IS THIS NORMAL? WHAT SHOULD I DO? I CAN'T SLEEP!

I knew there were a bag of poptarts in my desk drawer nearby, but I tried to convince myself that that was too much, poptarts are much too unhealthy, and I shouldn't really need anything else.
After lying in my bed for a little while longer, I finally decided, '*kitten* it! I'm going to eat those damn poptarts!'
I ripped the bag open and devoured those scrumptious, little pastries in a flash, feeling somewhat guilty in the process. My ED was telling me that these were extremely unhealthy and that I was disgusting for succumbing to their temptation. (I honestly haven't allowed myself poptarts as a SNACK in a loooooooonnnng time.)
At the moment, my mind, my ED, hated me, but my body, on the other hand, thanked me. My appetite, or hunger, or whichever it truly was, was finally satisfied, and I quickly drifted back into a deep slumber after making myself comfortable in my bed again...

So, my question is, is what I did truly unhealthy? Was I truly hungry, or was my mind playing tricks on me, simply craving food rather than my body actually needing it?
Is this a normal situation within a weight restoration process?
If such a circumstance arises again, what are better midnight snacking options?