Fantastic about the later wake ups - definitely on the right track!
That behaviour at bedtime here can be UT or OT and usually a look at my son's day can tell me which.
If I understand yours looked like this?
W/u 6
Nap 11-12
PD 6:30
Asleep 7pm
Compared to your previous schedule the 6.5 A before you put her down is much longer than the 4-4hr45 that she was doing until recently, so my guess is OT. But at least it sounds like she made up for it with the slightly later wake up time this morning - I normally get a super short night after an OT bedtime.
I probably would have shot for an even earlier BT. I try to keep A times to 5.5hr average. Also I try to keep to a 12 or 12.5 hour day, depending on nap length. So after your short nap, BT would have been 5:45-6ish.
Short naps can obviously be either UT or OT here - how was she when she woke? Did you attempt a resettle? I can usually resettle OT which is how I tell. If it is OT then this is just inevitable over the transition & it's worth holding here for a few days to let your little one get used to the new schedule.
It is possible the first A was still slightly short and could have resulted in a slightly UT short nap. I knew I could push my son a bit as he is low sleep needs, so I may have gone to 11:30/45 and done my best to stick to that time going forward. But you know your baby best to know which way to jump.
You did exactly the right thing last night regarding keeping her in the crib until she eventually went to sleep in my opinion, I stay in the room too. The only thing I've stopped doing recently is physically laying my son down. I now will do that once but then just repeatedly ask him to lie down, so he learns to do that himself and it minimises anything too stimulating.