This isn't purely anti-abortion pearl clutching in this instance. Where this occurred it is perfectly legal to have an abortion into the 20th week of pregnancy.

Fetuses are viable outside the womb at 24 weeks.

They killed the fetus with meds at 28 weeks, the pregnant 17 year old still went through labor (with no medical supervision due to how they chose to do this), they burned he remains, and then buried them on a farm.