While walking to the Dungeon conflux, I picked up two Minotaur spawn points. I placed them along with a portal with them. In Castle, there are horses in the Citadel.
Then 8 angels from two confluxes, a couple of Hydras, a Dragon Fly Hive with 30 Wyverns, and in one of the treass chambers (bugged passage) I attacked Mary. There was no chance.
Thanks for the game!