Bella Swan has a sister. The reason you haven't heard of her before, is because she's been fighting with The Chosen One, The King, and The Brightest Witch of Her Age. Meredith Swan, is The Warrior.
But now, Voldemort has been defeated, and the whole Wizarding World is in utter shambles. So, Meredith takes herself and her friends home.
(She only managed to convince Ron to leave Mrs Weasley after Mrs Weasley said that if Ronald didn't leave the house there would be no cakes for a week.)
So now, they're settled in America, and they have to start dealing with where their lives were going to go, now that they were war heroes and had no more villains.
But what happens when Meredith walks a little too close to the treaty line? It's not an imprint, I'll tell you that much.
Mere's life had never been normal, so why would it start now?