Just arrived on holidays at the moment and 19 year old has a face like a wet weak. I've spent a lot on this holiday and want everyone ro enjoy it. Also since i split with her dad I've gone back on the fags cause of the stress of it all and I've been hiding it from her and younger child for ages. Tonight she saw me smoke after getting off the flight and I feel like a rotten mother! Why do children act like this and what more can I do to make sure she enjoys herself. Youngest is pure excited but conscious of the grumpy head on older sister.