Wow she climbed all the way over the top of the rack! That is one determined piggie. I have jumpers rather than climbers and they have jumped quite high to get in a hayrack made of an undershelf unit that hangs horizontally. I gave in to their desire to lie in hay as follows. Clean hay is provided from small hanging racks that they wouldn't fit into even if they could climb over the top; and then under the racks are hay baskets that they can jump into and laze in fatly. The racks are over the side of the baskets by the cage wall, so their heads are pointed that way and their behinds the other way. As well as keeping the overhead racks filled, I keep replacing the hay in the baskets, at the head end as they eat down into it and at the rump end as it gets soiled. The baskets are lined with washable, flexible vinyl drawer liner and then a layer of coarse hay. The poops shake down between the hay strands. I put more hay on top a couple of times a day and that keeps them dry. I replace the hay at the 'rump end' of the baskets every day or second day as needed and thoroughly clean out the baskets once a week. My piggies roam around a lot but after they have their veggies they love to 'veg out' in their hay baskets and they eat more hay that way so I give into their hay nesting instincts.