Hi there, just a couple of thoughts - I think you've been getting fantastic advice from pps, have you been keeping her in bed when she EWs? I know that Marti discussed with you above that you should treat as a NW and sleep train for those EWs until your "agreed"WU time. What WU time are you aiming for?
For a LSN lo that nap is still quite early in the day, and as others have said her overall sleep is pretty good, it just seems to be at a less than convenient time. When you moved time zones, did you move her sleep gradually or just go with a drastic change overnight? If the latter, it might be worth trying something more drastic as she obviously copes with that.
Also, you do seem concerned that teething is playing a part. I would say that even if she is uncomfortable from teething, that isn't likely to be as constant as the daily EWs. Have you tried doing w2s perhaps rather than by stirring her properly, using the time to DF her some medicine (calpol or ibuprofen equivalents). This would enable you to rule out pain as a cause and also might help with the EWs. Then you can go for a much later nap and a much later Bt, moving the day by two hours as if you were travelling time zones, and stick with it. See how she gets on.
Potentially radical, but if the gently gently approach hasn't worked, might be worth thinking about?