As in she's nocturnal!
Naps a lot during the day (gets tired usually after an hour) as is pretty easy to get to sleep, but from the evening onwards she's wide awake and fights sleep.. meaning she ends up overtired and gets herself badly worked up. It can be after midnight before she's settled and I can't ever imagine her settling for the night at the usual 7pm ish time.
If I let her nap less during the the day, she's horribly grouchy and generally ends up crying loudly and angrily 
Any ideas of what I can do?
She's 9 weeks old. I know that's young but I have a lot of NCT friends who don't see to have the same issue and babies bed down for the night mid evening