hello Gill, this sounds just like my eldest.Unfortunately perseverence is the key: keep any naps before 3pm,have an evening routine(dinner,bath,story,bed)dont show that you're tired and just want them to go to bed,take them up and put them in bed and say'its bed time,lay down and i'll check on you in a minute' walk out and stand outside the door.As soon as they get out of bed walk back in and put them back in bed-no bargaining,no talking,just put them in bed and walk out again.Yep,its tiring and they will keep getting out of bed,but the message here is you're the parent, she's the child,it's bedtime and that's that.My son would cry,tantrum,ask for juice,a cuddle anything to keep us in there,and its hard at the end of the day to be patient, but an incentive to stay in bed helps-we had a bedtime cd from the early learning centre that plays bedtime stories and lullabies that really helped him lay in bed listening so he didnt kick up so much,he even started looking forward to going to bed to listen to it.Hope this helps,and it is just a stage,dont give up.