Hi there!
I'd hang on in there until that molar cuts through. IME, 2h is not an excessive nap at this age. It may well be teeth causing the EW. Have you tried DM around 3am? Painful I know to set the alarm for this time. BUT I have found it to be effective - might be worth a shot?
My only observation re: your day is if WU is at 5.30/45 and she doesn't go back to sleep, then 9.15/30 is quite a long day (14hours). I would stick to a 13h day max to try and minimise the possibility of your LO getting OT, which will perpetuate your EW problems.
What do you think?
Hena