My daughter who is mostly a happy child has over the last 4 weeks or so changed.She can go from happy to frustrated and/or crying for no apparent reason.Recently I was out with her,my husband and some friends with their children.These children were happy and doing what their parents wanted them to,but my daughter wouldn't walk in the same direction as the others and just cried when we tried to get her to change direction.However,when a couple of my friends tried to help by taking over and looking after her,she suddenly became really receptive and happy.Of course this makes me and my husband feel inadequate. Does this behaviour sound familiar to anyone else ??