A 12-year-old girl allegedly tried to kill her own mother by poisoning a smoothie with bleach after she had her iPhone taken away . The girl , who has not been named but lives in Boulder , Colorado , allegedly blended the smoothie earlier this month , spiked it with the caustic liquid , then fed it to her unwitting mother , who drank it . Her throat was burned by the bleach , and she had to be treated in hospital - but wrote the incident off as a mistake until her daughter tried again , according to police . Plot : The pre-teen allegedly blended up a smoothie ( file photo right ) spiked with bleach in the hope of killing her mother after she took away her iPhone ( file photo left ) The Boulder County sheriff 's department said that on her second attempt the woman poured bleach into a water carafe by her mother 's bed . When she smelled bleach again she reportedly confronted the girl - who admitted the attempts on her life were vengeance for having her smartphone taken away . She was later arrested . According to ABC News , she was charged with two counts of attempted first-degree murder on Friday . A police spokesman said : 'On March 6 , 2015 , deputies of the Boulder County Sheriff ’ s Office were dispatched to Boulder Community Hospital to investigate an assault . 'Subsequent investigation has developed evidence that a 12-year-old Boulder County girl attempted to kill her mother on two separate occasions . 'On both attempts the girl used bleach . The first attempt on March 2 , 2015 left her mother feeling ill after her daughter placed bleach into a breakfast smoothie she made . 'Mom noticed an odor of bleach in the drink and thought her daughter had cleaned the glass prior to making the beverage and did not rinse all the bleach out . 'Later in the week the girl poured bleach into a water carafe her mother kept in the bedroom . On the second occasion Mom noticed the odor of bleach in her water and confronted her daughter . 'This is when she learned her daughter had developed the plan to kill her for taking away her iPhone . 'The juvenile was detained at the Boulder County Juvenile Center . '
Child in Boulder , Colorado , blended up poisoned drink and fed it to mother . Score: 7