Well, got my dd's cholesterol results and unfortunately it's high

The nurse said that her LDL and triglycerides were high and that she'll need to go on a low fat diet and be tested every 6 months.
Does anyone here have a child with high cholesterol? I know it may sound silly, but what kinds of things did you give your kids to eat? She eats fruit and veggies already, but like most kids she's very picky about what she will eat and I know of lot of it (chicken nuggets, pizza, etc) can't be good for her. On the other hand she LOVES sashimi, but that's too expensive for her to eat on a regular basis. Any advice would be appreciated!
At least you know and know early - much better to find out and do something than for her to find out a few decades from now, when it's much worse, had been causing buildup, and her habits were way more ingrained.
I know some fish is quite good with good fats, but shrimp is high in cholesterol.
In general, avoid meat and meat products (dairy included), that's what has cholesterol.
Eat more plants, eat more whole grains - actual whole grains, not fluffy white bread or crap sugared cereal that says whole grain because it's made of corn puree. Things that start with the words '100% whole wheat' or 'stone ground whole wheat' NOT 'whole grain flour' - that means white flour.
Switch from white to brown rice, from white breads to real whole grain breads, and cut out as much meat as possible.
It doesn't mean you have to kill all her favourite foods, but you may have to change them. Make your own whole wheat pizza with lowfat cheese and lots of veggies, if you don't have a restaurant by you that makes that.
Make other finger foods to substitute for nuggets (which are really disgusting anyway, heh).
Keep a lot of already cut up fresh veggies and fruits in tupperware in the fridge for easy access. Big container of cut up carrot and celery and pepper sticks in water (so they stay fresh), containers of already cut up pineapple, melon, washed and hulled berries.
People don't tend to eat the apple from the bowl on the counter. They do tend to grab a handful of pineapple pieces if they're cut up and sitting all chilled and ready in the fridge.
Try making some nice hearty soups (not from cans), to get a lot of veggies and stuff in. You can do big batches and freeze in small containers. They're filling, low cal, and she can just pop it into the microwave if she's hungry.
A lot of it is stuff that goes for anyone but especially for kids - make it EASY to eat better. If she's looking for something to eat and there's nothing and you say no you can't have nuggets or pizza rolls or whatever she'd have from the freezer previously (clean that stuff out, make it gone so it's not there tempting her or that other people can have it, it's not good for anyone), that's hard.
If she opens the fridge and is faced with lots of colourful cut up veggies, there's soup, there's whole wheat bread she can have with, say, some fresh-ground peanut butter and some low-sugar jam, that's not so hard.
If it's got to be nuggets, make your own with actual whole chicken breasts cut into pieces and whole wheat bread crumbs and egg whites.
But I'd move to plants as much as possible - cholesterol is in animals and animal products.
Remember - this is not a diet or thing to change her test results. If this is a family problem and she's got it at 7? It's got to be lifelong habits for her that you are starting right now. Think of it that way. It's how you want her to eat for the rest of her life so she doesn't have the problems her grandfather and father did - and so HER kids learn to eat this way from the get go. Make it just how your kitchen is and how you all think of food, so she will think of food this way so she doesn't ask this question in 30 years about her toddler, not 'let's do this to fix her numbers.'