"I was shaking and I kept thinking of the way her mother died and I thought I owe it to this girl to be an example.
"I was trying to help her, but at that point in her life, it proved to be impossible. Now the parallels to her mommy are horrific. It terrifies me for my own child."
She added that she is grateful that Frances Bean, now 21, is "sensible", but said the meeting with Peaches still deeply affects her - especially in hindsight, following her tragic death in April.
"What happened with me and Peaches that day, when the junkie in me came out and I had to fight for the good side, brings me out in a cold sweat," she continued.
"You just can't believe it happened, it's so f****** tragic. This girl was vivacious, so full of life and it was weird and horrible that she has passed away.
"I read heroin was involved and I was not shocked. I know how Peaches liked opiates."
A preliminary inquest on May 1 into the "sudden and unexplained" death of Peaches, who was 25, ruled that the levels of heroin in her bloodstream was the "likely cause".
A full inquest is expected to be heard in July.
- Independent