Uncanny by Sarah Fine

  A girl struggles to remember her involvement in her stepsister’s death, aided by an artificially intelligent therapeutic companion.

White teen Cora Dietrich can’t remember much of what happened the night her stepsister, Hannah, (also white) fell down the stairs to her death. They’d both been drinking, but Cora was far more intoxicated. An advanced camera nodule on her temple called a Cerapin could have captured everything, and the girls’ home AI, Franka, could have called for help, but both were turned off before the fall. As the new girl in town, Cora’s painted as suspicious by Hannah’s friends, and she’s certain that Gary, Hannah’s father, believes she murdered his daughter.