10.3k, 46.7k loc is correct. However, you have to kill all of the nereid deathweavers several times to get her to pop. They are red con neutral mobs, and usually there are four of them. I killed them 3-4 times, then waited for all 4 to pop, and killed them again. Bring plenty of nereid pots and something to do afk, because this does take some time...
Reported on Daoc-trophy-mobs.com to be at loc 10.3k, 46.7k Meso. I found the four nereid deathweavers reported to be clustered around her, but no Riowyr. I tried killing them to see if she would pop, but so far, no go. Has she been moved? Does anyone know?