[How to beat Jupiter Junction]

Had this problem last week, too.. it took me a 15 Minute fight to kill her... you will run out of ammo and its definitely boring but once you got the movement rotation than its just a matter of time.. this video might help you to get the idea:

Edit: I forget to mention that after this fight i switched to HEK Shotgun and i regret not used that weapon earlier for this junction 😄