Leila teleported them to the rooftop where she set up an end point for their last trip. She could have chosen another destination. But with them being attacked within the campus, this is the only place she could bring them.
The moment they landed, Leila immediately took Khelly in her care. Taking out an emergency kit from her bag, she carefully tended to the wounds.
Sophie helped her, assuming the tasks of an assistant. Taking out the needed materials as the former goddess cleaned the wounds with water.
Harvey took off to find a teacher, preferably Ms. Rebecca. With the sudden attack at them, only their advisor seems reliable to lean on. Who knows if an unfamiliar school staff is an accomplice of their attacker?