K.P.
I am a mother of 4, 3 daughters ages 6, 3-1/2, 2; plus a son age 10. I gave all of my children soy milk until I found out last year that it's not a good thing. I learned this from several separate sources (natural health care practioners and books). I was told to take both my son and 2 yr. old off of soy milk. Most of us think that we're doing something good by giving our children soy milk as an alternative, but it actually causes more problem. I learned that soy milk adversely affects thyroid function, along with other things. Research it on the internet and you will find more information on this. I also highly-recommend the book "Medisin." You can order it on Amazon. It has a whole chapter about soy milk, soy formula, etc. Your daughter's body is trying to tell you something by rejecting the soy milk. Options to try are made from natural sources such as almond milk and hemp milk. Do your own research. And good luck with finding a healthy option for our daughter.