He would peek over at her in the Great Hall during breakfast, and he noticed every other week or so, she would receive an owl carrying a smallish rectangular red velvet box. She never opened it at the table, just quietly tucked it into her bag. He began to see a correlation. On the days she would receive something from that particular owl, she would be more impatient once arriving in the library. Not wasting any time reading or working on assignments to start - she would sit down like that first time he’d watched - settle herself briefly, glance around, and then pull out her little silk bag and set to pleasuring herself. On each of those occasions it would be new - something he hadn’t seen her use before. A different shape, size, or slightly different color - always some variation of green he’d started to note. 