How would you go about changing bedtime?

ArcticFox

I don't even know where to begin.. so yesterday at DD's party, my FIL showed up 3 hours late and DD took a nap almost 2 hours late.  People tell me all the time how kids should be flexible etc, but I had planned the party not to interrupt naptimes and now I am paying for it since DD went to bed at 11!!!

What is the best way to fix this?  We had a great thing going since the time change, she was going to bed just after 9.  Do I wake her up earlier in the morning?  Try for an early nap?  Wake her up from her nap?

My only concern is that when I have ever woken her up from a nap, she just cries and cries and cries, it is so awful.  I'm thinking my best bet is an early nap, because then it is usually shorter than the average nap, but if anyone has any suggestions I would love to hear them.  I cannot be up to 11pm with DD!