I managed to solo this on my hunter (10N) just using frostweave bandages. I didn't have any windwool bandages/cloth, so I made bandages with the cloth that dropped for me on the way to Valithria. Takes a while as you have to wait for the cd to finish before you can bandage again.
Tried the same thing on 10H and got owned. You can sneak past her now, btw.