This was her first win on the Duramed Futures Tour and Laing pocketed $14,000 for the victory.
Violeta Retamoza of Mexico shot a 2-under 70 to finish alone in second place at minus-6.
Song Yi Choi (67) and Brandi Jackson (69) shared third place at 4-under 212. Seo-Jae Lee only managed a 2-over 74, but took fifth place at minus-2.
Esther Choe (69) and Nicole Melton (73) tied for sixth at 1-under-par 215.