Hi, has she been checked for posterior tongue tie? There's info about it on the breastfeeding boards. Basically a posterior tongue tie restricts the up/down movement of the back of the tongue which can hinder latching and sucking and also feeding from a bottle. Tongue tie babies can take in a lot of air as they feed which can contribute to tummy troubles.
She has never been evaluated properly for this...just early on seen by a lactation specialist that said she had a high palette which could have contributed to her not latching properly,,, i will ask her pediatrician...