I went to help a pally friend do this and thought I'd post some valid information for others since nothing other than the difficulty of mob is posted....
This fight was cake we had me pally Time / Anguish gear Warrior well geared and cleric all lvl 70 was way over kill downed in about a min and droped what I needed.
Went to turn in the bone powder this morning and Drema took it, spawned in her kos form, but we could not attack or cast spells on her, she just laid there. Wasn't invis and had every step completed up to this point. Anyone know what the deal is?
killed the undead version today, took a full group, probably could have soloed her, easily duoable, has about 25k hp, hits for 500ish. I'm not sure if you lose the handin if you fail, so I would bring a friend or two just to be safe
should mention that once you give her the enchanted bone powder, the mob you're supposed to kill is undead. anticipating she'd be living, asked ranger to slow with epic, but necro saw undead graphic and successfully slowed (partial, i think he said). five of us in group: 57 druid, 67 ranger, 65 necro, and myself (70 pal boxing 67 cleric). was overkill, only cast heal over time once and she was dead. repop was maybe a minute after killed, too.