Molly tried her best. When Harry had told them, Arthur had asked excitedly, “is this a Muggle thing?” and Hermione had hurried out a “no!” and a frantic history of gender diversity in the wizarding world.
“It’s just that I’m a girl,” Harry had said. and Arthur had nodded and asked her about how telephone booths worked. He would call her by the right pronouns until the day he died at the respectable old age of one hundred and thirty three, and he would make it seem easy.