The Grief Keeper by Alexandra Villasante

Seventeen-year-old Marisol has always dreamed of being American, learning what Americans and the US are like from television and Mrs. Rosen, an elderly expat who had employed Marisol’s mother as a maid. When she pictured an American life for herself, she dreamed of a life like Aimee and Amber’s, the title characters of her favorite American TV show. She never pictured fleeing her home in El Salvador under threat of death and stealing across the US border as “an illegal”, but after her brother is murdered and her younger sister, Gabi’s, life is also placed in equal jeopardy, she has no choice, especially because she knows everything is her fault. If she had never fallen for the charms of a beautiful girl named Liliana, Pablo might still be alive, her mother wouldn’t be in hiding and she and Gabi wouldn’t have been caught crossing the border.