distance doesnt matter if you time the dodges right and do them in the right direction. if she starts waterfowl dance and youre close enough for the first burst to hit you, you dodge away, towards, towards. If you are far enough away to sprint away from the first burst, you can usually dodge away from the 2nd burst and always towards on the 3rd. I usually get clipped a little bit if she starts it in melee range too tho(but not always), I think there is a trinket that gives you a few extra iframes.
Seriously? I'll have to try that on my next playthrough, at close range I always dodged forward for the first one, maybe that was my problem!!