The antagonist is portrayed as having abandonment issues and such, and a supporting character makes a condescending comment about her needing therapy. I'd say it's intended to show the antagonist as mentally ill and very, very violent.
But there is an extremely uncomfortable moment where the antagonist watches the protagonist have sex and touches herself while watching. [SPOILERS] They're half-sisters.
For the 2022 movie, no animals were involved at all.