Hi there,
That's great that her nights have improved.
Is she still having trouble settling for naps? I wonder if it was OT related? Now her nights have been better, have her naps improved?
What have her last few days looked like? What's her mood after her nap and how is she at BT (exhausted or OK?)?
She was having super long naps before so maybe it's all just coincided with her needing a routine tweak, like a slightly longer morning A time? What time have you been trying for a nap the last few days?