User blog:Awareness Bringer/Rebecca's lineage

Was it ever said how the unjustifiably angry people of Dressrosa learned Rebecca was a member of the Riku Family? I don't think I looked over that part. I wouldn't be surprised if Donquixote DoflamingoDoflamingo wanted to be a sadist even after everything that had happened, but last I checked, her Mom faked her death to avoid a scandal of marrying a criminal in secret. Can anybody fill that question for me, please?