I really don't want to drop Molly, but I'm kind of extremely lacking in plot for her.
Just a reminder - she's a 7th year slytherin, eventually a beater on the Irish national team (she's just really good at quidditch in general - she's a chaser on Slytherin's team). Molly is pretty two-faced. She may seem sweet, but she knows how to manipulate people, especially boys, into doing what she wants. She'd likely use your character if they had something she wanted.
Does anyone want to plot with Molly? Past relationships/plottage? Something for the near future? I think she could be a really fun character to play and plot with, so let's think of something!