Usually there is one female teacher in an Amish school house. She is a young and unmarried.
I was going to touch on this point. Did they say the aid was pregnant or holding an infant. What you posted is true. I wonder if they were breaking with tradition by having a pregnant teacher. Presumably, she would be married if she was pregnant.
I don't think the teacher was pregnant. One aide was killed (I think that was the 15 year old). They didn't say who the pregnant women were.