She said before in a dragon stone council that she didn't want to rule over the ashes. Tyrian has mentioned the ashes of the city before couple of times.I saw something this morning about this having all been foretold. Something about not being queen of the ashes in an old episode?
So it was kinda coming, but I expected it to be because she had to. Not just because she felt like doing it.
The score was great as usual, but the best song was the light of the seven that was also used when blowing up the cept.