I know I am BU, I know I am!
DD is an amazing night sleeper, goes 12 hours happily (not a stealth boast....she hates napping and daytimes can be hard work)
Usually she falls asleep between 5.30 and 7.30, meaning my wake up call is not too unreasonable.
My problem now is the child that will not nap has been asleep since 3pm, meaning muggings here gets to play with baby porridge and the singing baby gym from 3am! 
I have given her a bit of a cuddle, changed the nappy and picked her up but she sleeps like her dad (dead to the world)
Would you persist in trying to wake her up or just deal with a 3am wake up?