Riley has her own soft, comfy bed; however, she much prefers sharing with her BFF Della. The trouble is (for Della) Riley is a bed hog. She encroaches and encroaches until she infiltrates all the bed space. (Della gradually gets nudged over to an edge of the bed and then retreats for a different bed, even though she was the first one on the now Riley-dominated bed.) It's all about Riley after all, and Della is an easygoing girl.
