My interpretation of Odette's story is that there really are 2 version of her. At a glance, the 2 versions are the prima ballerina side and the fatui side of her. You might even see another kind, the odette side and the lelek as her secret identity. But what intrigued me the most is the more subtle versions of her. 1 version is her side that really sees Signora as her proper mentor and shaped here to who she is today. The other version is the side that sees Signora as someone who is distant from her ballet, someone who she hates. These 2 sides finally made peace at the end of act II by acknowledging that her past, including Signora, is impactful to her, and at the same time made one last defiance by not following her word to forget her Fatui side.
Ps: She kinda looks like the ballet version of Suisei, which I like