Can you stand for anyone else to respond at this point? lol
I think you are on track.
Show your husband some of these posts, because he really needs to understand this from a woman's point of view. It's bad enough we receive images from every angle telling us we aren't good enough without having the most influencial male in our life telling us in some fasion we aren't good enough also. And whether you all talk about this in front of her or not, it won't be long before she senses it, if she hasn't already. All it took for me when I was a child, is when my grandmother saw me eyeing the Little Debbie snack cakes, in the grocery store, and saying "you don't need those" for me to become a secret eater as a child. From that point I thought, I must be fat for her to say something like that. So right there it began, I was only 8 years old. It is really sad that one little comment can change someone's entire life and feelings about themselves, but it can and your husband needs to understand that. Does he care more that she may be (or get) fat or that she feels loved and accepted by him. I think he really needs to assess that.
I am extremely short. 4'10". I've never looked like anyone I went to school with, I still don't look like any woman I know or definitely no one on TV or magazines. I was always stocky with broad shoulders. BUT because of that I knew I always needed to exercise from middle school on, made it a priority. And now a lot of those size 0's, who didn't have to think about weight, I went to high school with are overwieght after having their kids, while I'm healthy and physically fit even after having 3 kids. I still don't look like anyone else, even at the gym, but I can run at least 5 miles at a time, I can do pull-ups, push-ups (the real way) easily, my abs are very strong especially after having 3 kids, so my point in saying all this is, the only job you have as a parent on this issue, is to provide healthy food in healthy portions, no eating in front of the TV or letting her have free reign of the cabinets and fridge anytime of the day or night, make fitness a part of your life in that it is not optional. It's as normal as getting dressed every day and tell your daughter how awesome she is every day of her life. Being fat is all about what is going on in our heads as adults usually unless you live under a rock we all know what to do, it's just a matter of the tape reel in our heads why we don't do it.
The two of you are pretty much in control of what her tape reel will be, don't let your husband make it a bad one.
And since your daughter seems to be a "bottomless pit" as you say, one of my sons is like that, and while I don't limit his food necessarily, what I do do is, (he's 7) when he wants more and I think he's had a good healthy amt, I say, ok wait 20 min. if you are still hungry you can have more. Then we go play or do something else, he completely forgets he wanted more every single time, because his body has told him it's full and he's preoccupied also. He'd rather not stop the fun thing he's doing to go and eat more.
We have meal times at our house. If you are hungry between meal times you are welcome to eat but your options are fruit, veggies, a portion of nuts or yogurt.
They never feel like they aren't allowed to eat but it does force them to really assess whether they are hungry or not. I think that is key. When kids are getting snacks like cookies, chips, candy, basically anything that doesn't provide much nutrition, it doesn't force them to assess their hunger because they know it's gonna taste good regardless. It's like when as adults we know we are full from dinner but it doesn't stop us from forcing in that dessert b/c we know it's gonna taste good.
It won't be long before your daughter sees she is different than everyone else, no one needs to tell her. (That is like telling an overweight adult they need to go on a diet, they know that already. It's a matter of deciding, dedicating and doing it and managing the self sabotaging feelings every day.)
She will make decisions on her own from there to change what her body looks like (if she chooses) as much as she can, but as long as you are teaching her good habits, which it sounds like you are, that won't be difficult for her. What will be difficult is having high enough self esteem to feel good about herself whether she looks like every one else or not.
I hope your husband will read all of these and make his choice about what he really wants for his daughter because what he is currently doing will not only most likely give her an eating disorder quite obviously, poor body image,as well as self image, those two things affect everything else in your life. What kinds of relationships you choose, what type of student you are, what kinds of professions you choose, whether you set and reach goals, the lists goes on and on and on and he needs to know right now, he's going to play the biggest part in that!!
Good luck,
J.