A 15-year-old north Florida girl who authorities say fatally shot her 16-year-old brother after years of abuse at home pleaded no contest on Thursday to felony burglary and will receive probation and counseling . The girl 's probation will last until her 19th birthday , and is contingent upon her participation in counseling , and testifying truthfully in the case of her parents , who face felony child abuse charges , Third Circuit State Attorney Jeff Siegmeister said . 'This child has the best chance at a normal adult life by receiving the therapy and education she needs and residing in the setting of her current foster home , ' he said . A 15-year-old girl ( left ) and her 11-year-old sister ( right ) have not been charged with murder after the eldest girl fatally shot her 16-year-old brother at their Florida home in January . The eldest will receive probation and counseling . The girl and her 11-year-old sister were initially arrested on suspicion of murder after the January 5 shooting in Lake City . No charges were filed against the younger sister . The names of the members of the family are not being released because of the girls ' ages and because of abuse allegations . On January 5 , the girls and their three-year-old sister were left by their parents in the care of their brother . The parents were away on a work-related truck drive . Police say the brother locked the elder sister in her room , but when he fell asleep , she persuaded the 11-year-old to let her out so she could shower . The boy , 16 , was killed by his sister , 15 , on January 5 after she escaped the room her brother had locked her in and shot him in the neck . The older sister asked her younger sister to keep watch as she went outside and cut out the air conditioner of her parents ' locked bedroom window to retrieve a pistol . The girl asked her younger sister to take their three-year-old sister and hide in a closet before she shot her brother in the neck as he slept , police said . The two older girls fled the house , leaving the toddler behind . They were later found by police outside a Dollar General store after the younger girl called a friend saying she needed a ride . Documents show that the elder girl suffered years of abuse , including being locked in her bedroom for days regularly with only a blanket and a bucket to use the bathroom . The longest they kept the girl locked in her room was 20 consecutive days , the father told police . In the room , police found only a blanket and a bucket filled with urine in the closet , allegedly a punishment because the teenage girl was stealing and talking back . Letters from the parents asking her why she should be let out of that room were also found in the police investigation . 'It was learned that ( the 15-year-old girl ) has made past attempts at ending her life but neither law enforcement nor ( emergency management services ) was notified , ' police wrote in their January report . In addition , documents showed that she had been sexually abused by her uncle , who was convicted in 2010 . The uncle was arrested in December 2010 on sex charges after his wife found a USB with movie clips of him and the 15-year-old engaged in sexual acts . It had been going on for some time . According to police documents , his wife reported seeing a video clip of the girl sitting down and a man with his penis out , standing behind her . He then had oral sex with the underage girl , while she made noises , the wife told police . The victim later told investigators that she did not want it to happen . The uncle had told her to 'suck on his thingy ' and that 'they were to be private and not to tell anyone no matter what ' . The abuse had been going on 'for a long time ' , according to the police report , and the videotaping for about a year . The parents have been charged with child neglect and failing to supervise . The girls ' mother told police that they often locked the 15-year-old girl up when she misbehaved . The uncle was convicted and is on the registered sex offender 's list . Authorities also said the children 's mother had discovered the siblings having sex in 2011 . The mother reported to police that she heard noises coming from the bedroom and found the teenage boy having sex with his sister , who is a year younger . The mother told police that she separated the siblings and asked them what happened . The girl told her mother that she did not want to 'do it ' with her brother but he put pressure on her . She also referenced the earlier abuse by her uncle . After an investigation by child welfare officials , no one was charged . Her parents had also removed her from school , documents show . Siegmeister said all of the family 's history and circumstances were taken into consideration in the decision not to pursue more serious criminal charges . 'This case is a tragedy to all those involved : the deceased , the two arrested children , as well as their 3-year-old sister who has been separated from them both . Further incarceration ... serves no deterrent , rehabilitative nor other societal interest , ' he said .
Attorney said the girl will receive probation and counselling for four years . The January 5 shooting resulted in the arrests of 15 sisters , aged 15 and 11 , on a second-degree murder charge in Lake City , Florida . No charges were filed against the younger sister after the incident . Documents show the elder girl had suffered sexual abuse by her uncle . In 2011 , the brother and sister were discovered having sex by their mother . Investigators said the elder girl was held in a locked bedroom by her older brother while their parents were away on a work trip . Parents would lock elder girl in her room with only a blanket and a bucket to use the bathroom for up to 20 days as punishment , police said .