I'll testify that IME its better to wake them. I HATE doing it, but I find if I don't, and DS sleeps in, then he's not ready to nap at usual time, so I have to do a later nap, then if he has the same length nap as usual he needs a later BT, but if I cut it shorter & wake at usual time he is shattered by BT. So in some ways, if you want a regular routine, or at the very least whilst you establish a new routine, I'd say its a good idea. Once she is settled you may be able to relax it a bit more.
I'd just try & repeat yesterday & see how she does overnight tonight. Good luck.