I think you’re getting a hard time from some posters on here OP. Just because you have a history of anorexia doesn’t mean your instinct as a mum should be automatically invalidated. It’s ok to be worried that your daughter is heavier than is healthy for her age, height and build!
The NHS guidance I’ve seen cites data saying that if children and young people are overweight and it isn’t dealt with, they’re very likely to be overweight adults, with all the associated health problems. And surely nobody wants to create or perpetuate that situation 🤷🏼♀️ so YANBU to think what to do for best.
You sound like a pretty normal concerned parent to me, who is aware of her own issues that are likely to be germane to feeding your daughter, and who is striving to do the right thing.
Isn’t the most sensible first step to find out what you’re actually dealing with, from someone who is qualified and whose job it is?
Do seek some proper advice from GP, if you don’t want to approach a HV. They will either be able to put your mind at rest, or give you some proper strategies, and whichever it is, you can be more confident you are limiting your own issues affecting the care of your daughter.
Irrespective, it’s probably a sensible idea to prevent your daughter helping herself to things from the fridge. And maybe to not have juice in the house, to help avoid sugar spikes.
And there are ways and means of feeding up your skinny son in ways that are not going to be visible or seem unfair to your daughter.
Wishing you all the best, OP 💐