Yes and no. It really depends on how you're reading it.
It's certainly unusual for a grad student to move straight into a tenure-track position at a research university, although not so much at a primarily teaching-oriented institution.
If the point you're taking from it is "here's a cool breakthrough in knot theory and low dimensional topology," then her title is irrelevant. If the point is "this woman made a discovery so awesome that it was published in the Annals, and got her a tenure track position straight out of grad school," then it's quite relevant.
It's certainly unusual for a grad student to move straight into a tenure-track position at a research university, although not so much at a primarily teaching-oriented institution.
If the point you're taking from it is "here's a cool breakthrough in knot theory and low dimensional topology," then her title is irrelevant. If the point is "this woman made a discovery so awesome that it was published in the Annals, and got her a tenure track position straight out of grad school," then it's quite relevant.