I can imagine Marcy having a memento of Simon (maybe a newspaper clipping he left behind after singing with her) and every so often she'll take it out and have a good cry for her lost friend.
Or maybe she just found one he forgot...
Happy Christmas HermioneHermione would never tell anyone this, but she was jealous of Harry and the Weasleys. Why? Simply put, because Mrs. Weasley made them sweaters.Happy Christmas Hermione by dolphin64575
When the boys wore theirs during the cold months when they were searching for horcruxes, she nearly started sobbing every time she saw one. Mrs. Weasley loved them enough to take the time to knit a sweater with their first initial on it, and her parents were off in Australia, having forgotten she existed.
Logically, she understood that the Weasleys were the closest thing to a family Harry had ever known, while she had 2 loving parents, but she never got anything so heartfelt as a handmade gift. If she wanted something for Christmas, she’d tell her parents what it was, and they’d get it for her. They loved her, of course, but their understanding of her need to keep the Wizarding world a secret had caused a rift between them, they were distant, and at times appeared uncaring. For quite a few years, now, she had asked her parents for a