This question boils down to whether or not you think both of her feet were touching the floor at the moment she received the ball.
If you think that both feet are on the ground then Article 3 and Article 5(a) control and it is travelling because she moved both feet when she jumped to her left and returned them to the floor before shooting. (Either foot might be deemed to be the pivot foot, but both feet were lifted and then returned to the floor before the shot so it's a moot point as to which was the pivot.)
If you think that her left foot is not touching the ground when she receives the ball, then you can look to Article 4(b) and say she was in motion, jumping off her right foot and then landing on both feet before shooting. Which is OK.
In watching Biff's slo-mo several times, it appeared to me that her left foot was in fact on the court when she caught the pass, so it's a travel. YMMV.
------------------------------------------------
Section 6. Traveling
Art. 1. A player shall not travel with the ball.
Art. 2. Traveling occurs when a player holding the ball moves a foot or both feet in any direction in excess of prescribed limits described in this section.
Art. 3. A player who catches the ball with both feet on the playing court may pivot, using either foot. When one foot is lifted, the other is the pivot foot.
Art. 4. A player who catches the ball while moving or ends a dribble may stop and establish a pivot foot as follows:
a. When both feet are off the playing court and the player lands:
.. .1. Simultaneously on both feet, either may be the pivot foot;
.. .2. On one foot followed by the other, the first foot to touch shall be the pivot foot;
.. .3. On one foot, the player may jump off that foot and simultaneously land on both, in which case neither foot can be the pivot foot.
b. When one foot is on the playing court:
. ..1. That foot shall be the pivot foot when the other foot touches in a step;
.. .2. The player may jump off that foot and simultaneously land on both, in which case neither foot can then be the pivot foot.
Art. 5. After coming to a stop and establishing the pivot foot:
a. The pivot foot may be lifted, but not returned to the playing court, before the ball is released on a pass or try for goal;
b. The pivot foot shall not be lifted before the ball is released to start a dribble.
Art. 6. After coming to a stop when neither foot can be the pivot foot:
a. One or both feet may be lifted, but may not be returned to the playing court before the ball is released on a pass or try for goal;
b. Neither foot shall be lifted before the ball is released to start a dribble.
Art. 7. It is traveling when a player falls to the playing court while holding the ball without maintaining a pivot foot.
Just to clarify, under the rules "motion" is often not a factor. If a player catches the ball with one foot on the ground, even if she is not moving at all, she is entitled to jump off that foot and then land on both feet (jump stop) with the ball still in her possession. She no longer has a pivot foot in that case - but she can jump again to shoot or pass.
Likewise, she can catch the ball in midair, land on one foot - then jump off that foot and land on both feet (jump stop). Then jump to shoot or pass.
My post above is just a longer way of saying what stamfordhusky said . . .