The Bluejays played a strong first half against the Rangers, and put together a 15-2 run midway through the second half to cut a 22-point deficit down to nine with 3:41 to go.
But Northwestern outscored Tabor 15-5 the rest of the way.
The Bluejays trailed 13-8 early in the first half, but, sparked by a Chelsea Malone jumper, Tabor rallied to pull within two.
Coming out of a time out, Robinson tied it at 19-19 with 8:16 remaining before halftime.
The Rangers? Rachel Wilczek answered with a 3-pointer, and Tabor was unable to take the lead. The Bluejays rallied again late in the half. Trailing by six, Robinson hit a 2-pointer, and MacKenzie Dick followed with two foul shots.
Northwestern then scored a 3-pointer, but Stephanie Silvas scored four straight points to cut it to 35-34 with 40 seconds to go.
Robinson?s 3-pointer with 10 seconds left in the half was off the mark, and the Rangers? Autumn Klugh drew a foul crashing the defensive glass.
Klugh hit both of her free throws, and finished with 15 points. D?Shanna Butler led Northwestern with 20 points.
Tabor put three players in double figures: Robinson had 15, Sweat had 10 and Silvas had 10.
Coming?Tabor (0-2) played Oklahoma Wesleyan after press time Monday. The Bluejays travel to Emporia State for a Saturday-Sunday set against Fort Hays State and Emporia.
The Bluejays? next home game is Nov. 18 against University of Science and Arts of Oklahoma. That game tips off at 6 p.m.