DD1 (8) has decided that DD2 (3) is the spawn of the devil. Told me yesterday she wishes I had never given birth to her sister. DD2, meanwhile, asks Grandma (who is visiting from Spain) if she can take DD1 back with her when she goes.
The two of them are chalk and cheese. DD2 knows exactly what buttons to press with DD1 and can't stop herself. DD2 will wake DD1 in middle of the night, telling her to 'budge up, I'm getting into your bed' or will bite her/sit on her head until she wakes up.
Think DD1 has just had enough. She is very sensitive and sensible while DD2 is a jester who is just out to have fun for 20 hours a day (doesn't seem to need sleep)
DD1 is starting to retaliate and get quite vicious which is really not in her nature. Don't know what to do to broker a peace between them. Any tips??