The egg would boiled hard or scramble. Try stoppng the fresh fruits/veggies, mix some chick starter with water or plain yogurt or applesauce, making a mash.
No clue as to what's causing her underside so wide, hope someone can help out there.
If she's not eating she won't be pooping, I would stop the glycerine. Have you tried wetting her feed, what kind of crumbles are you feeding? Another food to try is the yolk of a boiled egg or scrambled egg, can tuna, or moist cat food....Nutri Drench and/or poultry vitamin/electrolytes in her...