I’m vegetarian (was vegan) and I have a few suggestions, hopefully something might help...
Please stop asking her to eat fish & meat. I understand you’re worried about her, but it’s really hard when you feel people don’t respect your beliefs, especially those you love the most.
I don’t really eat eggs either. I never eat ‘an egg’ or quiche type things, I make egg free pancakes and never buy eggs etc, but I’ll eat a little of something that has a little egg in it.
Waitrose do a Basil infused Tofu. It sounds revolting, but it’s actuslly really good (the olive one isn’t!). It’s in the fridge section near the quorn & cauldron things, tubs of salad, olives etc. Don’t tell her what it is, just slice some up or cube it & put it with the salad things she does like. It’s not ‘wobbly’ It’s firm.
Cauldron sausages are good, but you need to cook them in oil and for longer than the packaging says, they need to be really, really well cooked or they have a horrible texture. I buy two packets, cooked them after rubbing them in olive oil, have some hot for dinner and eat them others cold. Reasonable amounts of protein, low in carbs.
The Cauldron marinated tofu pieces are good too. I cook those in olive oil until they’re crunchy, great in salads or as a snack. Reasonable protein, low in carbs.
I avoid all Quorn now. I used to eat it, but having read up about it more, I now don’t. Some people have had awful reactions to it and it was making me a little gassy.
Avocado. A lot of people don’t like it, but I think that’s mostly because they’ve had one that under or over ripe. Both are vile, but a perfectly ripe avocado is food of the gods. I happily eat them out of the skin, but they’re great on toast or crackers with black pepper and very very thin sliver of cheese. In a salad.
Greek yogurt & berries.
Nuts. I eat roasted & salted almonds, cashews, macadamias and pistachio nuts. I can’t stand any others and I can’t eat those nuts raw. I can’t abide the taste or the texture. So it’s worth a bit of trial & error to see what she does like. Allow her to spit any out that she doesn’t like.
Oh & pine nuts, great in salads.
Food Doctor seed mix, again sounds pretty grim, but it’s really nice. I love it sprinkled on avocado, salads & on a bowl of Greek yogurt.
I often have a bowl of cubed cheddar, avocado, basil tofu & FD seeds.
It’s great she likes spinach & quite a few other veg. There’s a reasonable amount of protein in veg. Do you make Aubergine parmigiana?
Carbs make me very lethargic almost instantly.
You’re doing well to move her over to ‘brown rice & pasta’, just be sure to check it’s whole, not white with colour added.
(Have they tested her for T2 Diabetes?!)
Watch how much fruit she's having. It’s sugar as soon as it hits your body and you can get the vitamins through veg.
Try the Alpro yougurts, I like them, they don’t have that weird soy taste..
I hope something but in there is useful to you.