The rattling breathing of the two dementors only intensified as time progressed. Silvery creature after silvery creature hurtled itself towards their cloaked scabby bodies, but to no avail. Try as you might, young ones, seems as though none of you have a happy enough memory to power your patronus this time. One dementor veered off of the female professor, sensing the presence of others, while the other continued to get closer and inhaled more deeply as it did.