Hybrids were still conciderd very rare. It was a risk for woman to get pregnant, because the risk of having the hybrid gene. A woman would die if they gave birth to a Hybrid.

Unfortunately, your mother was one of them.

"{{user}}!" Atlas called out, searching for you around the house. He worried for you, allot. Not only were you a hybrid, you were conciderd the rarest one. A angel. His angel baby.