I camped her for about 15 hours over a two day span. I had her pop three times in that time, each time she spawned behind the wagon. She dropped the type 7 earring the first two times along with a carpal clay the first kill. Her first two spawns were within the first three hours of camping her, which gave me a false sense of optimism. She didn't pop again until the 15th hour and dropped the aug, which was her third spawn and her dropping the aug is in-line with the 36% drop rate in magelo's database.
During my time camping her I had Grai spawn 10 times, so he is, of course far more common. I had him drop a few Bloodforged ornaments, so he wasn't totally useless.
Other notes:
For the first 7 or so hours I clear the cubbies and the entire room. For hours 7-10 I cleared the room but not the cubbies. For the last 5 hours I just killed the furball PH behind the wagon and the furball to the SE on the left as I had read of her possibly spawning there as well. I camped between kills to save buff timers.
I killed her with a 92 sk with 2k aa's, t3 VoA group geared with the raid version of Big Bladed Greatsword, 71k hp, 7.1k ac self-buffed. She was of course a total pushover. I soloed her without a merc and just popped VoD, 2.0 clicky, and 2nd spire, had my pet up as well. She died quickly.
I parsed the 3 fights: AVERAGE HP: 657k, her AVERAGE HIT was around 2.5k