yea id stay away from giving it to her if you can ... read the ingredient list if its longer than 4 or 5 things forget about it ... juice shouldnt have that much in it....
if you have any fresh fruit in the house stick it in a blender or food processor with some filtered water and maybe a tiny teaspoon of sugar if its a tart fruit(like cranberries or rasberry or pomegrante) and blend the stuffing out it ... it will become liquid eventually add water til it does

try to get her to eat some veggies ... or actual fruits .. if she can ... since she is eating ....
this might sound odd .. but green tea is amazing when it comes to energy and healing ... has massive amounts of antioxidants which are awesome .. of course decaf and chilled for the birdie ... if you have it on hand ...