On the day the twins were born, doctors told their parents they probably wouldn’t even last the night. Thankfully they did and way surpassed where they were “supposed” to be physically and intellectually. Conjoined twins are extremely rare to begin with. About one in every 40,000 babies worldwide is born conjoined.
It’s even rarer that both Abby and Brittany survived. Only one percent of twins born conjoined survive more than a day. Brittany and Abby’s parents were given the option to separate the twins but declined. Doctors insisted it would be near impossible for both to survive the extensive procedures necessary to break them apart.