Gray Children: The Story of Mary Clive Cracker (2016)

Mary is this German/Russian born foster girl, she suffers from asthma and has been adopted by a not-functional family, the father works all the time and the mom does prostitution for a living. So of course Mary is very bored and lonely at home in the house, but the adoptive parents always thinks she is this sweet and innocent looking little girls, which she is NOT.