I did not put her up there, so I was puzzled as to how she got up there. She is not a jumper; I have to pick her up and put her on the sofa. I thought that maybe she was using the scroll bar across the bottom as a step. But a night or two later I caught her in the act. She went to the side of the chair and jumped up at the back where the seat is tipped back and a little lower. I'm still not sure why she started doing this or why she can jump into the chair but not on the sofa! It has become a favorite napping spot for her!