Of course it’s not true. As the Herald said, women have been taking the Bar in New Jersey since 1985. Do you mean to say that in the late 70s, when she took the Bar, she was the first woman to take the test who was breastfeeding.
By the way- I am the person who tipped off the Herald about this three days ago. I idly picked a Warren speech on Youtube, and her nursing claim popped up within the first couple of minutes.
Reporters should really check out all of her speeches on Youtube. No doubt there are dozens and dozens of whoppers by Warren.