Unhealthy weight and ways to support DD

[Bluestar23]

Hi,
My DD is just finishing year 7.
She's always loved food and there's certain things we don't keep in the house or she'll just eat them all!
She dances 3 nights a week for an hour and a half at a time and swims once a week.
She's definitely overweight and this started to become noticeable in year 6 although she's never been skinny but wasn't overweight.
We always push healthy snacks but I've had to take her off school dinners as she was having breakfast, then buying something else on arrival to school and also lunch with a pudding. She's spread the money out which would buy a meal deal and was choosing very carb based lunches and snacks. After we'd discussed it numerous times we stopped putting money on her account and told her she's on packed lunches.
She blows her pocket money on food. She likes to go shopping with friends, but for the past few months has blown it in one go on one shopping trip mainly buying lunch (she hadn't needed), then a sweet treat and a bubble tea. Each time before she's gone we've talked it through what she could buy and she's said the right things but can't follow through.
The only good thing being she had no money to go to the shop to buy other food. She did recieve it weekly before but I want her to try and learn to budget and clearly now see that when it's gone it's gone!
I've also resorted to taking her card off her during the week so that she can't spend the odd £1 she has left on sweets.
I rang and spoke to the school nurses earlier in the year but they weren't concerned and said we couldn't do much more.
I feel she's slimming down a bit now she's hit puberty but her eating is out of control and I'm not quite sure how to support healthy habits.
I was also overweight at her age but my parents approach was awful and at the end of year 6 my mum told me I was fat like her and basically there was no hope so I should get used to it! It's been my life complex! I did slim down in my teens but now I'm older I'm not slim.

Buying bubble tea when she's shopping with her friends is a lovely, social thing to do though @Bluestar23.

How overweight are we talking?

Thanks, it is. And I discussed with her just getting the bubble tea, having lunch at home etc and maybe spend the money on skin care, makeup, clothes to be honest anything other than food!
She's 5ft 2in and wears womens size 12 to 14 clothes.
She's quite shapely already and strong but not very fit even with all the dancing. Her cardio ability is quite poor.
She'd just eat all the time if she could - healthy and unhealthy.

Sounds like something psychological. Comfort/binge eating. Is there a professional she can confide in?

This sounds a lot like me when I was growing up. It was definitely puppy fat at that age, and normal teenage hunger, but my parents had issues themselves and they were horrified. Their reaction made me spiral and here I am, thirty years later and have lived my whole adult life with issues around weight, food and body image.
This made me ultra aware of my own responsibility to my children, and I decided not to make any foods "bad" or "off limits" (we only had certain types of fruit and veg at home and foods were definitely sorted into categories of good and bad.) We have crisps, chocolate and biscuits in the house. We also have nice fruits, nuts, etc etc. Nothing has ever been forbidden, and food has never been given a moral value. The result is that the crisps get left, and the apples disappear.

I don't know if this will work for you, but I do think that it's so so easy to get this wrong and do a lot of damage.

Thanks, this is what I'm trying to avoid and she loves all foods.
She made herself fresh guacamole as a snack yesterday. She's a good cook and we encourage this but she struggles with any self control.
My parents were obsessed with mine and my mum's weight growing up. Not my sisters as she was 'slim'.
We're trying to educate her and her sister about food. She will always choose volume over anything else but she's also always been the same.
I'm not slim and I don't make a big deal about my own weight etc, I just try and move more and encourage her to walk with me when we get opportunity and get outside. My own mum was always on a diet and took slimming pills etc. I used to go to the diet clinic with her. Looking back she wasn't even particularly big. She just wasn't skinny.
I really don't want her to have a complex like I did. If we talk about eating healthy portions she just says she's fine! And there's no issue.
It does sound like emotional eating but this isn't new. She just has more access now she's older and I'm trying to support her on the learning curve.
We do have things in for packed lunches.
We've ways had an issue with her taking food that's not hers. Her sister has some allergies and can't eat the same treats. For example when we've had halloween or Xmas treats they've recieved as presents. She'll take her sisters (when noone is around) and then pretend she hasn't, instead of eating her own. We find out when we find the wrappers and it's the special brand. It's probably happened since she could go downstairs by herself.
I stopped getting chocolate/food advent calendars as she'd get up at 4am from being 3 so she could get the chocolate.
I've spoken to doctors and nurses and as I said spoken to the school nurses but noone has said anything useful.
Just try the healthy swaps!
Sorry, realised I'm adding a lot of info!