Miriam

Miriam originally worked for a Pokémon Center before joining the academy. She is a friend and former coworker of Model Naiara. Miriam became the academy's nurse after failing to qualify as a health instructor. When the player embarks on their Treasure Hunt, she gradually becomes inspired to attempt the certification test again, and is successful, guaranteeing herself a teacher's job for the next school year. Miriam later participates in the Academy Ace Tournament. Source: Bulbapedia