The queen is only very basically implemented. For a start, if she can’t attack she would spawn a brain leech or some other minion. She would also have a mist emitting injury reaction. Secondly, if she is at risk of dying she would flee the battlefield and heal inside her lair ready for another attack (the monsters are persistent characters.) Thirdly, there are other abilities and different mutations for different situations. Fourthly, she will gain a more flexible attack for her pincers which would be more difficult to hide from.