Harry was tired of Ron and Hermione always fighting and not admitting their feelings, bringing everyone's mood down. He decided to help them along, as many times it took. (Bluecatdown)
Hermione kept on insisting and nagging on learning all about wizarding customs and culture. Ron finally had enough, and decided to introduce her to it all. (Pururart)
“What do you think Luna? Want to give it a try?” Hermione asked as she finalized the spell. The magical tentacles waiting to obey with a flick of her wand.