Christine K. lived alongside her mother's body in her apartment in the Unterhaching area of Munich for 13 days after she allegedly killed her.
The 40-year-old told police she had wanted to kill herself, but she strangled her mother first with the washing line.
Police found the body of her mother Karin in the apartment after gaining entry on Saturday. They arrested Christine at the scene.
A good friend of the victim had contacted the police after several attempts to get in touch with her friend had failed.
She described her as generous and warm-hearted, but said there had been problems between Karin and her daughter, who moved back to live with her mother in 2012.
“She was such a wonderful person. But she was too nice to her daughter,” she told the Munich Abendzeitung on Tuesday.
The mother and daughter had argued over money, which Karin had lent to Christine, who was trying to pay off debts, according to the report.
Karin’s best friend said she was worried as soon as Christine moved back in to the flat. “I was uneasy about it right from the outset,” she told the Abendzeitung.
Neighbours reported hearing shouting and raised voices coming from the apartment.
The friend raised the alarm after her friend failed to contact her for several days.
Munich police said in a statement on Monday that the alleged perpetrator had admitted to the crime, saying she had wanted to kill herself afterwards but was unable to do it.
She is being held by police and has been charged with murder.
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