Who is Natalia Grace, character shown in 'Good American Family'?

Natalia Grace is a Ukrainian with dwarfism accused by an American family of lying about her age. Recently released drama, 'Good American Family' is based on her story. An Indiana couple adopted her in 2010, believing she was around seven years old. However, couple later claimed Natalia's a sociopath and petitioned a court to legally change her age to 22.