I think before that was done they would have used the same technology to diminish the abnormal supply not directly terminate. First case of radio frequency abortion is from 2009 well after selective vessel elimination was popularized in 2005-8, with hundreds of these rare cases treated during those years. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2698202/
Fetal radio frequency intervention is only done at University centers by referral, only about 40 centers in USA have the technology at this time, less when this incident occurred. The suggestion by another poster that the author’s docs did not know about the potentially twin saving procedure is not possible on the facts. The more we learn about the author and the details furnished the more this appears to be a curated and manipulated tale told for a purpose.
Thanks for the info.