Solange, 28, was seen lashing out at her brother-in-law in an elevator at a Met Ball after party two months ago, reported Daily Mirror.
But she says all of them in the family have moved on from the incident.
"What's important is that my family and I are all good. What we had to say collectively was in the statement that we put out, and we all feel at peace with that," she said.
The trio had also issued a collective statement saying they apologise to each other following the incident in May.