First, I think a lot of parents make the mistake of thinking that this is a toddler and you can control their food intake in exactly the same way as a toddler. Even if it worked temporarily, she's 10, so is much more independent now, so presumably has pocket money, will start to walk home on her own or with friends, goes to parties on weekends, goes out with grandparents- the opportunities to over eat on sweets and sugary things are endless if you are obsessed by it and oriented to it.
You cannot police a 10 year old or an 11-16 year old girl into being slimmer, and looking at them with disgust and thinking of them as 'lazy and overweight' will just trigger more eating in them. There's actually evidence to suggest this- that weight stigma results in heavier people, not thinner people.
I know this is very hard to hear, and it may mean your dd is overweight for some time to come, but I think you have to stop worrying about her weight, and start loving her as the person she is.
Continue to make healthy choices in your own shopping, buy her the healthy food she likes, and model good choices yourself. I don't even see anything wrong with saying out loud that it's all about choices and if we choose to eat a whole tub of ice-cream, we probably would be overweight if we kept doing it. But you can't guilt a 10 year old into wanting to be slimmer, she probably feels out of control and stressed by the unsettling time we are having and the fact her mother is clearly extremely unhappy with who she is and her body (yes, I know it's hard not to be, I've been there).
Ultimately, at some point in her teen years, SHE and not you will have to take control of her own eating, and decide what exercise she'd like to take, and how she'd like to look. It might take a while, but the absolutely best thing you can do is pretend (fake it til you make it) like you are disinterested in her weight, and that you absolutely value her as a person. That you are happy to buy healthy food for her, or support her to exercise or to buy nice clothes, but that you accept her how she is. Yes, you might have a few years of her squeezing into too tight clothes, but at some point, when she feels valued she may start to make healthier choices, even get into diet and exercise, or it may be she gets vain and decides she doesn't want to be overweight when her friends are slimmer. Or she may not.
Valuing her and making it clear that whatever size she is, she's wonderful is the way to go. Full stop. Even if you managed to control her eating for another year or two and stopped her going out with friends, walking home, eating at parties, threw yourself in front of her second portion of carbs- that's you controlling it, and it won't work long term.
I agree with whoever suggested love bombing. Follow her interests for a day, listen to her, bond with her. She can hear your sighing and eye rolling that she's not the daughter you want. Stop that and reset the relationship and forget about weight because ultimately having a happy daughter is more important than anything, including weight.