Things friends say, meaning to be helpful?

My best friend doesn't "get it". I wouldn't expect her to since she hovers around a size 2. Never had in issue with anything food/diet/mindset. I, on the other hand, think of myself as a female Tweedledee/Tweedledum. You know.. the skinny legs, rotund gut/but/belly. I've gained and lost weight. I've been anywhere from a size 12-22 during the past 15 odd years. My most recent success came back in 2008, when I hit 154 ( oddly enough, that was a size 12 on me. I think I'd need to be 100 pounds to hit a size 10. ha ha) Currently, I'm clinging to the 190's, always getting dangerously close to 200.

Today, bff asked me why I'm moving so slow on losing weight. A word of advice for all the skinny Birches out there.. don't ask a binge eater WHY they are still so fat. It gets into my head and sticks with me for days.
I shot her an email tonight because I didn't know what to say, so here's a copy.

You're right. I didn't give our conversation a fare shake today. Yes, the weight loss has been moving slow (I gain and lose the same pounds over and over again). Yes, you probably do exercise more than I do, especially now that it's rollerblading season and you are feeling better this year. Yes, I have a problem with the amount of food that I eat. I eat when I'm bored; I eat when I can't express emotions that I have, or feel like I can't say things. I know you don't understand this- can't see why I just can't get my act together.. but I assure you there are others like me out there. I mentioned one thing that is different from before when I was able to lose weight is not doing the online blog. That is something that I need to do again to get back on track. I'm doing that class at church on negative thoughts. I'm trying. Please be patient with me as I make healthier choices. Ask me to do active things, invite me over to share a meal, check in with me but be gentle! I'm trying.