Terminally ill mother who killed her disabled daughter to prevent her ‘from ending up in an institution’ is found dead alongside pills and a suicide note which said she was ‘tired’ of fighting

A terminally ill Illinois mother who killed her severely disabled daughter in 2015 committed suicide two days before she was due to return to prison.

Officials confirmed Bonnie Liltz, 57, who was set to return to prison Monday for the crime, was found inside her Schaumburg apartment Saturday.

Liltz was sentenced last year after pleading guilty to involuntary manslaughter of her daughter, Courtney, who was 28 at the time the mother administered her a lethal dose of prescription medication.

Previously, she revealed a motive over concern about who would care for Courtney after she passed away from her own health complications.

Liltz told her mother earlier Saturday she had plans to meet with a friend for a lunch and movie outing, according to ABC 7 Chicago.

But friends and family later discovered the suicide note which read Liltz loved them ‘very much and that she’s sorry, that she just could not go back to that place,’ her sister, Sue Liltz, revealed in a statement to the news station.

It seems a depressed Liltz overdosed on medication which she previously gave her daughter and also took herself at the time of Courtney’s tragic death.

Bonnie Liltz, center, appears at a Rolling Meadows courthouse Wednesday, May 11, 2016, in Rolling Meadows, Ill. Liltz. Officials confirmed Liltz died by suicide Saturday

Bonnie Liltz, center, appears at a Rolling Meadows courthouse Wednesday, May 11, 2016, in Rolling Meadows, Ill. Liltz. Officials confirmed Liltz died by suicide Saturday

Liltz appears with attorney Thomas Glasgow at a Rolling Meadows courthouse last year. She admitted to killing her disabled daughter back in 2015 over worry about who would care for her after she died from her own health complications

Liltz appears with attorney Thomas Glasgow at a Rolling Meadows courthouse last year. She admitted to killing her disabled daughter back in 2015 over worry about who would care for her after she died from her own health complications

Liltz adopted her daughter Courtney (pictured above) when she was four years old, despite the child's handicap

Liltz adopted her daughter Courtney (pictured above) when she was four years old, despite the child’s handicap

In a note to her attorneys, Liltz wrote she grew ‘tired’ of fighting and simply wanted to ‘be with’ her daughter again.

‘All she ever wanted was to be with her Courtney. She was such, such a good mother,’ her mother, Gladys Liltz said.

Attorney Tom Glasgow, described her suicide as ‘a tragic, tragic end,’ while adding that Liltz ‘didn’t want to die in prison’ with the memories.

On the anniversary of Courtney’s passing last May, Liltz appeared in good spirits as she exited the Cook County Third Municipal District Courthouse in Rolling Meadows.

She adopted Courtney when she was just four years old, despite the child’s handicap.

Liltz's sister, Sue Liltz, (shown in an interview) said her suicide note read she loved her family and friends 'very much and that she's sorry'

Liltz’s sister, Sue Liltz, (shown in an interview) said her suicide note read she loved her family and friends ‘very much and that she’s sorry’

The depressed Liltz killed herself Saturday inside her apartment in Schaumburg, Illinois (pictured)

The depressed Liltz killed herself Saturday inside her apartment in Schaumburg, Illinois (pictured)

In 2012, while Liltz was hospitalized for reoccurring cancer and serious intestinal problems, Courtney had to stay in a private facility under horrendous conditions.

What happened to Courtney in the private facility haunted Liltz, according to her sister, Susan. 

‘She was filthy, her clothes were filthy, she had diaper rash. It broke Bonnie’s heart to see Courtney like that,’ Susan told the Chicago Tribune at the time. 

She gave Courtney, who had cerebral palsy, the overdose through her feeding tube before taking it herself along with a glass of wine.

During the 2015 event, the mother left another suicide note, which read in part:

‘I am so sorry to put you all through this but I can’t leave my daughter behind. … I go first, what will happen to her? 

‘I don’t want her to live in an institution for the rest of her life. She is my life.’

The horrified sister found the two unconscious inside the home and called for help.

Courtney died at the hospital. Liltz was revived and later arrested.

She was initially charged with first-degree murder, but upon hearing her story, the charge was lessened to the second-degree involuntary manslaughter charge. 

Liltz (pictured, center) was seen smiling in court last May after pleading guilty to the involuntary manslaughter of her 28-year-old severely disabled daughter

Liltz (pictured, center) was seen smiling in court last May after pleading guilty to the involuntary manslaughter of her 28-year-old severely disabled daughter

Prosecutors leaned toward leniency in the case after friends and family painted Liltz as a loving and devoted mother

Prosecutors leaned toward leniency in the case after friends and family painted Liltz as a loving and devoted mother

Prosecutors were lenient in the case after friends and family painted Liltz as a loving and devoted mother who had her daughter’s best interests at heart.

They hadn’t requested a specific sentence and did not call witnesses to testify in favor of a harsh sentence.

Courtney, who could not talk or care for herself, attended Kirk School in Palatine until she turned 22.

She was then enrolled in a day program, where officials from her school and program told the Chicago Tribune Liltz was an involved and devoted mom.

They also told the Tribune that Courtney seemed happy and cared for.

Another longtime friend said the mother placed Courtney in a residential program years ago, but ultimately decided she didn’t want her to leave home, the Tribune reported.

Her attorney argued there was no evil or malice in Liltz’s actions and said her act was out of desperation – not knowing what to do to protect Courtney if she died. 

Liltz was preparing to finish her four year sentence for the involuntary manslaughter conviction prior to her suicide.