"Ecks-PEK-toh pa-TRO-num," said Erin in an audible but unconfident tone. It almost sounded like a sigh. She was not thinking about her happy memory yet. That's probably the reason why nothing came out from her wand. How could she do this task? Looking at the other students who tried, some had produced a slight whisp of smoke and others, like the sixth and seventh years could cast a corporeal Patronus already. How awesome!

She stared to the others for a moment, she hoped someone would join her on casting the Patronus Charm. Deciding to look for one herself, she tried the charm once again, "Ecks-PEK-toh pa-TRO-num."