Rhonda thought that, in theory, she should be able to cross the river using the stepping-stones. 
P.S.... As observed in the comment by my sister, Vivienne, I got the idea for this from a visit to Royal Zambezi Lodge, in Zambia, where we were lucky enough to spend a holiday. This photo of the hippos there is currently my wallpaper on my desktop, and was the inspiration for this illustration!
