Criggle Cloudpuff translated the pages from his sister's journal and discovered there were several references to Blackwind Isle. Apparently she was trying to find the ingredients for a solvent mentioned in her journal. Criggle suggested we might find more information by retracing her steps.
I should retrace Clarissa's steps by collecting the ingredients she planned to gather from Blackwind Isle.
Collect some globules of goo from mudstone oozes
I have gathered the globules.
Collect some crushed crystal shards from crystalline burrowers
I have gathered the shards.
Collect some vials of synovial fluid from thornspine prowlers
I have gathered the fluid.
I have gathered the ingredients needed for the solvent Clarissa described in her journal.
I need to return to Criggle on Whisperwind Isle.
I have gathered the ingredients. I should consult Criggle.
I delivered the ingredients to Criggle.
I have given the ingredients to Criggle. For some reason this made him uncomfortably happy.
I retraced Clarissa's steps by gathering the ingredients from Blackwind Isle that she mentioned in the journal pages I found. I still did not find any signs of Clarissa, but I returned the ingredients to Criggle and he has started working on the solvent Clarissa described.