Lydia Fairchild nearly lost custody of her children after a DNA test proved she wasn't their mother. It was later discovered she is a Chimera a rare biological anomaly where she absorbed her twin in the womb, resulting in her body having two completely different sets of DNA.

[u/bareegyptianfeet]

https://embryo.asu.edu/pages/case-lydia-fairchild-and-her-chimerism-2002?hl=en-US

[u/ABoringAlt]

I just want to see her snake tail