DD1 (age 6) is constantly trying to control DD2 (4) who is a strong character and doesn't want to be controlled. She constantly interferes when DD2 is playing alone and wants to "help" her make choices - she can be quite smothering and overbearing with her. She also tells her off frequently, and will always compare her own behaviour to DD2s - for instance if I say to DD1 she's been very good over something, her immediate response is "better than DD2?". I really her to let her sister be her own person and seperate out, particularly as they will soon be going to the same small village school. It's also really interfering with her own development as she spends so much time and energy fretting about what her sister is doing. I've started to try taking them out seperately as much as possible to give them space, and give them individually 30 mins undivided attention each evening but I would really value pointers of how to manage their relationship - it just doesn't seem at all healthy at the moment.