She was doing an immaculate job staying away from the wizarding world after the war. That is until she keeps running into Weasley.
Stubborn, defiant, and audacious. I really thought I could handle those Slytherins and future death eaters on my own- too bad the Marauders keep getting in my way. Being friends with Lily Evans doesn't help either. How will seventh year play out when tensions between the houses reach a boiling point?
Sure there's a war brewing outside of Hogwarts. But does that mean that Gryffindor's and Slytherin's can't get along? Clearly not. Chaos ensues.