Lilas lies. They convinced everyone, even Alya. Adrien's 'take the high road' only helped Lila and hurt Marinette. She was fed up with it. The Academy for Arts will gladly accept her though, with a full scholarship, and Marinette makes the choice and goes. On her adventures, Marinette will learn to love again, grow, and think for herself for once. A fresh start will be good for her