The Old Fire by Shua, Dusapin, Élisa

In the wake of her father's death, Agathe leaves New York and returns to her childhood home in the French countryside, after fifteen years away. Agathe and her sister Véra have not seen each other in all that time apart. Now, they must empty their home before it is knocked down. Véra stopped speaking when she was six, and as the pair clean and sift through a lifetime's worth of belongings, old memories and resentments surface.