Looks like she might have been digging in there. I see some dirt on the floor of the cage on the right side. The dirt might be to dry. You should be able to make a hole or tunnel with your hand or a small shovel and it should hold the shape without collapsing in. Make sure she has easy access as well. Add a few sticks or branches in there.
Also if you have cats or any other animal make sure to put a towel or something over it so she doesnt get spooked and gives up on the hole she is digging and yes it look very dry