I realize you posted this almost a month ago, sorry you didn't get any replies. Has there been any change in her health?
If you only had her for one month and only knew she ate "TPG" with no details, the list of foods you provided is a LOT of possible new foods for her. I would've just stuck with BML and something simple and common, like apples and pears, and then slowly introduced the rest maybe one every two weeks or one a month.
I don't really understand why you are giving them pedialyte, gatorade or apple juice regularly. TPG is a complete diet given with fruits and veggies. The three listed drinks are usually used to recuperate a sick glider. Apple juice has a lot of sugar, and the other two contain electrolyte replacements - this helps sick gliders losing a lot of fluids and not taking in much food. It is not necessary when they are healthy and eating a complete nutritional diet.