Drugged My Husband, Saved My Daughter

From the back cover

After Serena ran her over with a car, Lily lost her sense of smell, and her daughter Aria's congenital asthma worsened. Lily's husband Zachary, a top attorney, promised to send Serena to prison, but secretly signed a settlement agreement and even defended Serena in court. When Lily asked why he would save their enemy, he called her selfish.

From then on, Lily and Aria stopped crying. Lily brought Zachary a glass of milk as he worked on the defense, and he thought they had learned to behave. Then he overheard Aria ask whether he had drunk the special milk, and Lily answer that the dosage was steady and would not show up on any tests.

Zachary stormed in, demanding to know what she had fed him, and threatened to send Lily and Aria to prison if a toxicology screening found anything. He forced Lily to sign a false statement for Serena, and when Serena accused Aria of stealing a brooch, he suspended Aria's treatment. As Aria's airway began to close, Serena took Lily's phone and stopped her from calling for help.