Not that it helps, but ds#2 is doing it too, I am transitioning to 2 naps & he is getting 2 more teeth, has got 2 in the last week, he is also all but crawling & I think that is contributing to it all.
My first ds had lots of night wakings at this age... he was never a good sleeper & I thought it would be different with ds#2 as he has been a good sleeper... but it isn't.
So I can really only offer the advice to be consistent & try not to let her be overtired...very hard when you transition 3-2 naps, but just keep the routine consistent & if you have a longer A time, try to spend more of it doing quieter things, I give longer bath, go on walks, play outside with him, as they all keep him happier
HTH