Anyone have experience with this? My cat used to play fetch and be active and jump and play, now she mostly lays around. She does play but she needs exercise as she's putting on pounds. I'd like her to fetch her ball again and run and be active. She will start out but no longer brings back to the ball. She will start out playing but then run back into her kitty tree or other spot. Is there something I did wrong why she wants to hide out rather than continue running and playing?