This one isn't perfect, but it did the job for me 6/10 times.
Save Shields until the turn before you lose (she can't blow them up, so the low helth isn't an issue) Use the dragons to get the damage rolling, then parallel-spam her dragons to avoid the Miracle (1 game I got 4 27/27 light dragons doing this).
It probably could be modified to increase the wins, if someone wants to do that.
61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61o 61r 61r 61r 61r 61r 61r 61t 61t 61t 61t 61t 61t 61v 61v 61v 61v 61v 61v