We Need to Talk About Kevin(2011)

Eva is the mother of Kevin, a teenage boy who went on a murderous rampage at his high school, killing several of his classmates. Following the tragedy, Eva is overwhelmed with grief as well as guilt, and she finds herself the target of her community's anger for raising a son who is considered a monster. She moves to a smaller home, endures vandalism, tries to earn a living, and occasionally visits Kevin in prison. In an attempt to cope with this dreadful situation, Eva reaches out in writing to Kevin's father, her estranged husband.