Is it possibly? As a young baby she got constipated and we were advised not to give her grain. She ate very little grain wheat/ cereal/ products until closer to two. It didn’t seem to make her more constipated. But lately she’s been having really bad bloating
Celiac is what comes to mind. Or non celiac gluten sensitivity. Or some other gut issue. Constipation is a clue that her gut isn't working properly, and the bloating is another symptom. I'd want a gi workup, and if they don't find anything I'd go the functional route.