Sleeping beauty?!

Its been a mad few weeks sleeping in this house and that house and running life around the looking after Milly arrangements. Andy and I don't often get to sleep in the same house these days! Milly is going through a 'I don't WANT to go to bed/sleep' phase and this was after I finally got her off to sleep at 10:30pm at mother-in-laws. Then I had to start work... I hope we get through this phase quick. How can she have more stamina and energy than me?!