The story claims this happened only 5 years ago, and the technology to confirm Downs with 100% certainty had been readily available for quite a number of years. The fuzzy "feeling" the alleged father claims his wife had, that "that something was wrong, in addition with the child other than just Downs", tells me that believing the baby had Downs (despite not bothering to confirm this medically) wasn't the real reason this couple chose to abort. They didn't care whether it had Downs or not, because the mother had already decided, for whatever reason, that she didn't really want the baby anyway.
I think this is a reasonable analysis. The possibility of a Down Syndrome diagnosis was used as a pretext to justify the fuzzy feeling that something was wrong.