Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks Leandra: where do I actually defeat her?

I saved whitewitch. I got Laendra's blood and spell, diary etc.
Which zone do I need to go next?

Combine the blood and spell, then talk to Icara.

I did that already. cannot figure out what to do next.
I have the skills to deathknights.

The phantom forest. You need to enter the area through the hollow log, where your characters instantly die. To survive, get the protection amulet from the wizard's house located in hunter's edge.