The North Carolina native won the girls 2-mile on Saturday.
Frazier, Leingang set 5,000m meet records.
The high school star will compete in both the 5,000m and 2-mile events.
She won by one one-hundredth of a second over Erin Finn of Michigan.
She medaled in multiple distance events on the track.
Wesley Frazier, who won the 5000m and mile, was one of them.
The Kenyan led wire-to-wire in the boy's 5000m.