There was a ladder that came in the second cage, an older model I think, which gives access to the upper level, though she mainly igonores it and just nips up the side of the cage! All I had to buy extra was a half bend for the turn down in to the second cage as the tube that ran along the outside before provides the rest needed.
Have solved the escaping from the play pen with the use of some cardboard -
Though of course supervision is still needed
