You’ve got at least three problems here.
- Not eating together.
- Your DD’s diet
- Your diet
Her (vegetarian?) diet does sound carb-heavy, does she have enough sources of iron and iodine, any leafy greens, omega 3 etc?
My dd slowly emerged from a very, very long bland fussy “phase” aged 9 onwards, although she wasn’t as restricted as your dd. Her fussiness stemmed from disliking any strong flavours or surprises. I backed right off, and she slowly agreed to try new things. I’m really not sure why, must be age-related. She has always known her own mind, and all this nonsense about keep offering and eventually they will try …. Well, no. She would sooner starve than try something she suspected would taste yucky, and I didn’t want to make mealtimes a battle (it was getting frustrating).
So, here’s what I think you do. You eat with her, you insist. You don’t have to sit at the table. Set up a picnic on the lounge floor. Have trays on your laps and watch a film together. Eat seated at the kitchen counter while you chat - I usually get dd to do her reading aloud homework while I prep the meal. But ALWAYS eat together, for now even try and eat breakfast at the same time.. Make sure you talk during the meal, put music on in the background, and enjoy your own food. The best way to encourage her, I think, is for her to see you enjoy what you eat.
And then, you still cook the same basic meal for her and you, but you jazz your version up. This is what I do with my kids, when I’m fed up of the same old thing:
For example:
ultra plain vegetables (carrots, broccoli) - Chuck them in a stir fry with a handful of cashew or peanuts (DD can pick those out). If she likes the veg soft and not at all brown, put a bit of oil and a bit of water in to cook. For cook plain rice alongside. When it’s all cooked, serves it all and quickly Chuck a handful of frozen Quorn chunks in the pan to stir fry with a good measure of quick grated ginger, tamari soy sauce, sweet chill sauce and chilli flakes. Add that in top of your portion.
potato (mash / chips / jacket potato with cheese):
cook her chips and on another tray, do a big tray of potato wedges, roasted onions red peppers and carrots for yourself.
Cook her jacket potato and for yourself make jacket sweet potato with garlic and chive cream cheese and a side salad
cheese on toast - your version can have a smear of tomato purée, thin strips of red onion in it, and make a side salad. Use English muffins instead of bread sometimes.
plain crackers with veg sticks: you have a huge salad with it.
veggie sausages (2 varieties) - grill them with some chunks of red pepper and carrot meanwhile, make up a sachet of Schwarz sausage casserole mix and stir in the sausages at the end, serve with mash for dd
plain pasta - what do you serve alongside? My dd loves plain pasta with a bowl of boiled sweet corn, peas and carrots alongside. For yourself you could use some pesto, broad beans, broccoli, toasted pine nuts too
or macaroni cheese (which I hate) - cook this for her, don’t eat it yourself then. You don’t always have to have the same thing every day, I guess.