A.J.
We're vegetarian household and I don't know where we would add meat in, so here's what's always on hand: Protein: Raw organic nuts, all types. Nut butters-almond especially. Avocados. Hummus. Eggs. Beans. Lots of organic sunflower and sesame seeds in salads-LOTS of calcium in the sesame seeds-like 16% of daily rec. in just 2 tbspns. Tons of various veggies.
Remember, being vegetarian is not really about "leaving out meat" it's about feeding your body all the various necessary healthy living cell-fueling food it needs. And that comes primarily from vegetables and fruits even if you do eat meat. Protein and grains have their place, but unhealthy diets are heavy in meat and carbs and light on veggies. She needs to be the reverse: Eating tons of veggies-many of which have protein and calcium-and whole fruit, with about 25% of her diet being healthy protein and carbs.
Many people make the mistake (I did it too way back in the day) of relying too heavily on bread and pasta and dairy when they cut out meat. A HEALTHY pasta dinner, would be a gigantic salad with varying rich greens (not iceberg) and a small portion of pasta and sauce. That way she's getting her full nutrition (from the salad, especially if it has nuts or beans thrown in) and her fix of carbs from the pasta, but not overboard. This ratio is pretty standard for a healthy diet for all snacks and meals. Instead of a peanut butter sandwich, do celery and carrots dipped in peanut butter/hummus etc. And for carbs, the various healthier grains like chia and quinoa and dark rices are just as easy to make as all our trusty white pastas. These are healthier and can be thrown in any veggie dish to keep a variety going. My kids love roasted sweet potato fries and baked zuchini with parmesan...
Also, not to be discouraging, but soy is not all that healthy and should be kept to a minimum. Even tofu. A healthy asian diet has a little tofu in a few dishes, but not all the soy stuff Americans eat like soy meat patties etc. Most labels show a ton of artificial products in those soy things.
She's doing GREAT! Just always increase the amount of veggies to like 75% percent of daily intake, her meal should be just as mountainous as everyone else's -vegetarians are hungry too!...and the rest will fall into place. When I eat at my dad's where every meal has meat, I simply make myself a huge salad to go with the meal and pull the meat off the pizza, out of the pasta, remove it from the soup.....not sure why they even add it to everything :)