Make sure she is well hydrated, lot of fruit and veg in the diet helps keep everything moist on the way thriugh but if she doesnt drink enough she’ll stilk struggle even with loads of fibre.
In smaller babies and toddlers they say gently rubbing their tummies along the large intestine can stimmulate them. Thats from the bottom right side of the abdomen up to the ribs across to the left and down the left hand side – it seemed to help one of mine when he was little – worth a go if she will let you