i lot of info there-- some good and some misleading. I have killed her a lot fo times for different epics and just to get the key so i can get jade reavers for my toons. also wanted the shield off the lord which tributes for 3k and looks cool in my houses.
First of all some lore: she is the daughter of Lord Rak 'Ashiir and was taken from her home when a minion of caziac thule came to visit. he spent the rest of his life in morning for her rather than tending to his kingdom which led to his loss of his wife and his counsellor and the downfall of the city.
keys: first you can get a key to the golem room off the captain of the guard. once it is on your keyring you will always have access. this is the only key that is really important until you loot the key to the elevator off her. the key to the elevator is temporary but you can put it in a house and it keeps very well.
locked doors: there are 3 locked doors -- you can get through them by casting an illusion. put your nose in the door, click the illusion to remove it, and you will enter the room.
after killing the golems, take the door to the right and go down the hall. it makes a turn and follow it. when you get close to the room at the end of the hall, there is an invisible door to the right of the hallway. step through it. it is best to have lev on. you will then go up a misty glass walkway to the first guard tower. follow the walkways and you will pass through two more towers, one has a locked door. you will come to a walkway that has a piece broken in the side and then it turns and you will find a broken area that leaves a gap. simply levitate over the gap and you will be at a door that is locked. this is her room.
be careful going in because if you go straight you will fall through an invisible floor. turn either way and go up the ramps to the platform. there may be one golem or there may spawn one after another. i find that if there is only one golem, she will usually aggro. if there are multiples -- one spawning as soon as the other is killed, she will not take part in the fight. get someone to lure the golems away because until she is killed they will sometimes continue to spawn. I lured them outside one day and continued to fight them for several hours until i got tired, my bags were full of jade reavers, and i gated out.
she seldom drops anything but the woodman's staff and the key. however, she seems to do better if someone is doing their epic. took only 3 kills for my mage to get her torch. now i am working on the shaman epic. she seems to have a spawn time of around 2 hours.

Dread Shield of the Slayer
Key of Torsis
Neh`Ashiir's Diary
Spell: Call of the Hero
Stained Fine Runic Spell Scroll
Torch of the Elements
Woodsman's Staff
