Scarlett seems taken with the role of the big sister, in fact she has now adopted Polly and Zoe (her dolls) as additional little-siblings.
Where will it end I wonder? Why is she not conforming? The role of the older sister is to be jealous and territorial at this stage, isn’t it?
Sure Ivy will get a poke in the eye sometime soon.
57 Signals 
long may she continue to be a loving big sister. just like yours billy.
Runs in the family obviously 🙂