I've never had a budgie eat her eggs. I don't know why a tiel would do that. Maybe she broke one by accident, tasted it while trying ito clean up the mess (budgie hens keep their nests clean), and liked it so she broke the other and ate it too. I don't know.
My budgies all like to eat plain scrambled eggs. It's very good for them so I give them a bit maybe once a week. I've never given them raw eggs and won't for many reasons. Try adding some hard boiled or scrambled egg to her diet. She could really use the extra protein, vitamins and minerals in her diet, especially since she's a habitual egg layer. Make sure she has a cuttlebone and/or mineral block to replace the calcium she loses each time she produces and lays eggs.