Originally posted by Grimtempest:

if you need a safe spot to dodge her breath attacks mine underneath her platform with an exit on two sides so you can hide under it and also use it for mobility.

You can't actually mine under her platform, but you can mine under a lip around the edge, and that's what I recommend. Make a safe spot under there where she can't see you and duck under there when she starts to take flight. Wait a minute until she lands, which will probably be on the platform above you, run out and (my preferred method) jab her with the silver sword secondary attack until she starts to take flight again, and repeat.

I use bonemass power, which mostly nullifies here melee attacks (assuming she doesn't get locked up, which she does frequently on the ground), and last time I fought here, it was over before the bonemass power ended. In fact, I started first thing in the morning, and was back at my base for dinner, which was across an entire large mountain range, some distance of plains, and some swamp.

If you're running around trying to use a bow, it's going to take much longer, and you're likely going to have to deal with other mobs. If you use a strong melee attack you can mostly eliminate that problem.