The Stranded Mermaid's Betrayal

Lila Lane, a Merfolk, saved Austin Young and fell in love. Austin Young treated Lila Lane as a stand-in for Yara Shaw, even after they married and had a child. When Yara Shaw returned, Austin allowed her to create ambiguous situations. Lila Lane's body began to scale due to betrayal. She used her merfolk blood to save the child. Yara Shaw faked a pregnancy to force marriage, Lila Lane jumped into the sea and revealed her true form.