f it went from a softball size to a golf ball size I think she will be fine and will eventually digest all of it. However, worms, damage from worms, tumors or a stuck egg might be causing a partial obstruction. You might want to check her vent for a stuck egg.
Put on a glove and water based lube and very gently insert you finger in the vent. If an egg is there you will feel it at about an inch in. Here are some pictures to help you visualize where the egg should be: