Peaches Geldof died with her 11-month-old son next to her at her home in Kent, a report has said.
According to the Sun, baby Phaedra was found next to his mother's body when she was found by paramedics earlier this week.
A source told the newspaper: "The hope is that Phaedra is so young he wasn't aware of what was going on. The most important thing is that he's OK.
"Phaedra was by her side most of the time, even when she was sleeping. At the very least, there can be some comfort that she wasn't by herself when she died."
The source also told how the 25-year-old's husband Thomas Cohen had been desperately trying to contact her on the day she died.
Cohen had been in London with their elder son, Astala, and had asked a friend to check in on her at home. The friend then called the police after becoming concerned for her welfare.
"It is devastating for Tom that he wasn't there but it couldn't have been avoided," the source said.
News of Phaedra being found next to his mother echoes the situation in which Peaches' mother, Paula Yates, was found after she took her life in September 2000. Yates was found with her four-year-old daughter Tiger Lily playing next to her.
Peaches' cause of death remains a mystery after her autopsy came back inconclusive. Toxicology tests are now being done to try to establish why she died.
Meanwhile her father, Bob Geldof, has visited her Kent home for the first time. Her body has now been released for her funeral.
It is thought she will be buried at St Mary Magdalene church in Davington, Kent – the same church where the memorial service was held for Yates.
A source told the Sun: "The church holds the most bittersweet of memories for the Geldof family. They have had the best of times and the worst of times in that churchyard."