What she left behind

Ten years after Izzy Stone's mother shot her father and was commited to an insane asylum, Izzy;s foster parents enlist Izzy's help in cataloging items at a long-abandoned state asylum. Izzy finds letters from an eighteen year old girl, Clara, who may have been sent there even though she might have been sane, causing Izzy to question whether her mother's act was one of insanity or caused by something else.