If there's one thing Hermione knows, it's the power of words.
She's looking at him with a do-I-know-you expression on her face, and it takes him an uncomfortably long time to figure out who she is. Parvati Patil and Charlie Weasley accidentally meet after the Battle of Hogwarts. Post-DH.
It's always been you, Lily-" and the best thing about Muggle photographs is that they don't move. Scorpius/Lily, post Hogwarts.