DD used to play up heaps like that! Is she turning the light on to trash her room? If so take the light globe out Worked wonders for DD.
Also i have found especially since DS was born DD likes to lay in bed and chat to me about everything and nothing, we have a chat laying down kiss n cuddle then she will usually settle of to sleep. If we dont do this she will get out of bed and muck around untill all hrs of the night.