I've been having the same issue. Last night, I had to kill her three times in order to get a spinneret. Prior to the last "fix" I was able to acquire said item after one go around. All the times I did not receive the spinneret, I was given looting rights and there were fewer than ten people trying to kill her. Honestly, it wouldn't be so bad if it weren't for the fact that this event is going to run for a very brief amount of time, and the fact that they beefed up the drones. I can't tell you how many times I've been killed by them since they became tougher.