When u hear the Kinetic Burst sound or see the animation, use your shield to tank the next hit.
For her dash use Commander's Grab, that has a bigger hitbox, in the direction she is looking.
And when she ults, use your ultimate to take her out.
Get Nimble from the item shop. Being lighter on your feet and with proper positioning (especially with warder's field enabled), you can circle him counter-clockwise (away from his gun). This allow you to hit him without him ever hitting you.