Hi Mols and Natalie,
Wow you're both going/been though the wringer, glad you found us here.
If you want more support DWED is a UK based PRO-recovery charity, with forums on facebook, twitter and google+ if you want to discuss more or need support or even just to talk to people who will understand we're here. there is a sister charity in the US too (Diabulimia awareness).
Mols well done for fighting and being open, it's the first step :) Great quote *thumbs up
Natalie I'm not a doctor but it's possible be that you're experiencing gastroparesis from what you're describing. DWED encompasses all the ED's not just diabulimia (ED-DMT1), I'm sure you already know how important it is to get control of your levels, (this isn't a lecture honest), it can improve the symptoms you're describing. I don't know how long you've been T1 but most ED's (in my experience) seem to be a result of low self esteem/control(albeit self destructive), Long term sufferers are just as likely to develop ED's (from burn out or denial) as the newly diagnosed, I had T1 for 12 years before I started to develop serious issues.
Eating disorders are mental health illness', as you so rightly said, you know the logic but the emotion takes over.
When you start to take regular insulin and stabilise your sugars over a period of time, your desire to binge will decrease.
In a nutshell (as I understand it) omitting insulin is starving your body (no matter how much food you eat it is still starving), insulin is what your body needs to absorb/process the good stuff from your food, the less insulin you take the more you feel the need to binge, which pushes up your sugars dehydrating you (starving your body more), which makes you think you need more food starting the cycle over again.
Hope we can help you both, please keep in touch YOU are NOT alone x x x