To answer you question properly it would be good to know what your daughter is eating. Is she interested in the food you eat? My daughter Marla (16 Month now) did not get any formula. She was breastfeed only until 6 month and partly until 12 or 13 month of age.
After that she started getting everything we eat (fruit, vegs, beans (tofu), bread, noodles, rice). Avocados are her favorite!
Do not worry so much! watch her developement. As long as she is getting taller and/or gaining weight and/or is developing motorically and/or mentally it is all right. Give her fresh, unprocessed organic food.
Give her water to drink. Almond milk is also alright.
I searched for studies a lot and actuallyyou can find some reports about malnourished kids from vegan parents. But these parents always did not gave their kids enough calories. And this has nothing to do with being vegan.
is also interesting for you.
The force is strong on the fruity side.....