DP & I try to do nice stuff with his 2 dc & my 2 dc. Every time we go out his dd (8) acts spoilt e.g won't join in, won't eat same as everyone else, sits with sulky face on for hours. It's really irritating me & one of my children (older - so realises what's going on) is beginning to say they don't want to come along because they know what dd is like. He does really well & doesn't give in, but this usually leads to massive stand off which spoils it for everyone. Aibu? Any tips on how to manage this? I can't bear to see him being manipulated like this!