| Same thing happened to me. When I asked her about the raw materials like she TOLD me she wanted, she said, "Priveleged information. Sorry," and all of the dialogue options for her quests got removed.
My solution? I did what I was planning on doing anyway... I just killed all of them. Stupid vampires.
(I've found that you can basically taunt and kill anyone that's rude to you. I haven't encountered any problems yet. Good stress relief.) | 
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