Well I have chucked some torn up kitchen paper in there, will see how she goes with that. She seems to enjoy being busy, moving her food around etc so hopefully she'll get stuck in and make a new bed.
I think she's a bit of a weirdo though. She has this cage and sometimes makes her bed in the tube bit, sometimes in the house and sometimes in the middle of the cage, ont eh floor
When she isn't using teh house as a bed, she uses it for weeing in and poos in the tube!