Amelia quest BG1NPC project *Spoilers*

[Blackraven.]

1. Anyone know what is the most advantages outcome of Coran's quest with Amelia is? Xp and reward wise.
2. Is there something that can be done with the powder and manual afterwards?
3. How do you kill her? I have drizzt's +5 sword and I keep getting "weapon ineffective". Is she immune to slashing weapons? What are your experiences?

Thanks in advance!