Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks Where is Leandra's blood?

I have been to Leandra's lab and found her diary and the spell, now I just need her blood and I cannot find it. I am also stuck in the crumbling mines and can access the library, entrance, crypt (ghost there that does nothing) and Leandra's lab. Everything seems to be a dead end!