Barbie: Mermaid Power

Let’s watch Barbie Movie Preview: Barbie Mermaid Power

Warning: spoilers ahead

Quite simple, my theory is that Marlo is a descendant of Eris from A Mermaid Tale. If we consider this timeline, and say that Malibu is a descendant of Merliah, this would explain why Marlo's crown gave powers to Malibu: because she was born with powers and not Marlo, just like Merliah and Eris.

Thoughts?