User blog comment:Kaido King of the Beasts/Chapter 868: Eye to Eye, No Conversation (In an Mmmbop They're Gone)/@comment-24850639-20170608121813/@comment-305469-20170608164329

The revelation of Carmel's true nature was meant to establish that the world Big Mom is trying to create was based on a lie. I feel like Oda is intentionally trying to make us feel sorry for her, as every adult in her childhood either abandoned her (her birth parents), drove her away (the Elbaf giants), or didn't care for her (Carmel).