It doesn't make sense on the face of it. If the nuns were being used sexually, there would be no reason to abort their babies and then kill the nuns themselves! If --- per the classic "Maria Monk" libel --- the convent was the moral equivalent of a bordello, you certainly don't kill your whores.
Second, the idea of aborted "unborn babies' skeletons" is highly questionable. Babies in utero don't show significant ossification of their cartilage structure until mid-pregnancy. On a week 20 ultrasound, you're just beginning to able to see those bones -- they’re finally visible.
The vast majority of abortions --- like, 95+ percent --- are procured before week 20. The murdered babies' remains will not have mineralized bones, and the soft tissues would macerate, liquefy and decay away rapidly.
There was a blood libel like this against nuns in Ireland just a year or two ago. After the sisters' reputations were dragged through the mud by the assassin press, what finally emerged was that the skeletal remains were of orphanage children who had died of infectious diseases. This was from the days before antibiotics (i.e. from the mid-19th-century through WWII) when infectious diseases periodically decimated infant and early childhood populations in Ireland and elsewhere.
BTW, the death rate in the Catholic orphanages was lower than that of the surrounding counties in Western Ireland, because the nuns, despite terrible poverty, were doing a heroically good job of saving the orphans' lives.
And yeah, if you want, I can document that. It all came out right here on the various posts and links of Free Republic.
This was before the internet.
Black & White newspaper in Spanish about a convent/monastary that was being demolished and oops they found the bodies of both nuns and babies. Perhaps pregnant nuns?
I don’t remember.
There’s plenty of documented cases of it happening elsewhere, and you can call it libel if you wish.