Hi, I'll admit I don't know much about the natural stuff, but I eat a lot of fortified food so maybe this will help.
Total Cereal has 1000mg Calcium per cup. I know you don't like milk, but what about on cereal? (I love the rasin bran) Also, I love to make grill cheese with a CA fortified cheese called Kids Builder. I get it at walmart with all of the other kraft singles stuff. Its not kraft, but I don't know what to call those cheese slices wrapped up individually
It has 400mg per slice, and two slices makes a great grill cheese on some low cal wheat bread. Swiss miss even has a low cal fat free hot chocolate mix that it fortified with CA, (300mg) And I love spagettios (ok so not natural at all)
, and they have a kind that has added CA as well. How about cottage cheese?
And also, so that you can look up foods that you like (natural foods included) there is a great webpage that I use that has nutrition facts for a lot of stuff, and it actually includes Calcium. It is at calorieking.com or there is another at health2fit.com/foodgroups.html (i think calorie king has more stuff, but they are formatted differently, so you might like one better than the other)
I hope I don't get in trouble for giving out a website, but I use them and like them, and I'm not affiliated with them or anything. So thats ok right? Anyways, good luck to you, and hey, good for you for going in depth and trying to be so healthy !!