I have been in and out of child care for twenty some years and have seen almost everything... I have seen several children do this for a number of reasons. One could be that she has a over active gag reflex. I cared for a child with this that vomited after anything he didn't like, because he was not able to control the muscles in his throat that would make him gag and then throw up. He got to the point that as he got older, he would use this to get out of class when ever things got tuff for him...so be careful not to over react to this...kids are smarter than we give them credit for, and can use our reactions against us if we aren't careful. It also could be that she isn't ready for veggies. Try slowing down on introducing new foods. Just try one new one a week. Some children don't adjust to change or new foods as quickly as others. You could also try the milder veggies first, like corn, potatoes, maybe squash, leave the green, or stronger ones for later. Mixed anything has a varity of diffrent veggies, one that she might be reacting to, so I would stay away from anything mixed. Just serve her single fruits, and mild veggies for a while. As long as she is not loosing weight and is getting plenty of vitamins through other foods, I wouldn't stress...if she continues to do this and you feel she is less active or seems to be suffering, insist that the doctors investigate it more throughly. A mother usually knows when there is something wrong, after all we are with our children more than the doctor is. I would stay away from Pedialyt also. She would probably tolerate water and juices better. (Have you tasted that stuff, ugh!!) Best wishes to you and your daughter. Remember to enjoy her and not stress over everything. She is only a baby for a little while longer, and you'll never get that time back, relax and enjoy her!!