My 21 month old DC is bright, generally settled etc, but she is really unkind to her sister (6 yrs). She's much better with her other sibling (9). Obviously, she's still very little, and there's a limit to what we can do / expect her to understand. But she doesn't like her sister to touch her, and as soon as she sees her she says 'go away, x' or 'no x no'. Her sister is a lovely, loving little girl being deeply hurt by this. Sometimes, it's clearly a sort of joke - she giggles when she says it. But sometimes she clearly really means it, and it is very hurtful. We tell her not to say it, we cuddle her sister when she does it and say how lovely she is, etc. But it isn't getting better! (She's OK with other kids at playgroup, etc.) ANyone got any experience of this / advice? I though it was bigger siblings who were usually jealous of or unkind to younger ones! That would be much easier to deal with...