early deposit
I have had females lay at 25-28 days. it is possible for early arrival. You may try a different bin or even the trash can method. Make sure she at least 8-12" of dirt, preferably 12". Make sure it is easy for her to get in and out of, bird ladders made a huge difference for mine. Afterwards she will hardly be able to walk horizontally, much less vertically. Keep that food and water ready, as she will need it ASAP!