Hi! Wow great news! Creations would be so happy to hear this! She is currently on a break but will return for sure.
Edging back BT is risky... with your current routine, I wouldn't do any earlier than a put down at 7pm. I've been exactly where you are, and it's easier to put down earlier for nap if the night was short and rough, than try to mess with BT. Set BTs, give or take 15-30 mins (for you I would say between 7 and 7:30), truly help regulate their sleep, in addition to their digestion. They're correlated. What do you think?
Just a quick note on the 4am NW... 4-6 is our lightest sleep phase so sometimes noises, discomfort, etc... can cause a full wake. Do you see any teeth? I think you are doing such a wonderful job giving her the opportunity to go back to sleep... if it continues though after a few days, it might be discomfort. Is there anyone up around this time? Noises outside? LIght?