Hopefully you powered your handgun upto it's highest power cerberus level, then just shoot her until she starts flinging the homing shots at you and hide behind something big like one of the containers and once both shots hit and she's waiting for a couple of seconds, rush out and shoot her some more for a bit, then keep hiding and shooting until she changes to the ones that rush along the floor, then just jump around as much as possible, never stay still shooting her, and then I can't remember if that's her last pattern or if she does something new but keep blasting her until she dies anyway. Worked for me