S.G.
One of my sons caught on quickly that it was more convenient, FOR HIM, to go in the diaper so it was best to just say no more diapers, they're gone. He was 2 or 3 and knew the concept but had to make the choice. He said what about the store? I said their out too, but might get more next week (knowing it would not take a week!) So he gave in. It does help to just set them on the potty and ask them to try, maybe get them to sit a bit while you read a book and with no pressure to poop, if they need to go it will work but timing is key. It is great if you know when she may be ready to go poop. Stock up on some favorite stories in the bathroom and Good Luck!