Congrats on the new bird! And the first egg!! Coturnix are creatures that hate change... Change = stress in a coturnix world.... They are also usually stressed by "alone".... If I were in your situation. I think I would limit all the stress I could and leave her on the chicken feed. Especially if you plan to find something more appropriate soon. Boss wont hurt her if given with some form of grit. But its only 17 to 24% protein so its not gonna help you alot. Some form of grit is a must if you feed any grain or seeds. Your oyster shell will help here too.If you cant find game bird starter, turkey starter usually runs pretty high in protein content too. I would expect your hen to only lay a couple more eggs before she shuts down in protest of the new living arrangements. Its normal. You made changes in her life so, "No eggs for you!!!".....This will last anywhere from a week to the end of time.... ;-) Good luck, Bill