What bad thing happened to make Juana want to throw away the pearl?

The doctor realizes that Kino will likely look to the place where it is stored, and sees his eyes move to the corner where he had buried it. After the doctor leaves again, Juana asks Kino whom he fears, and he answers Œeveryone.'

JUana realizes that the Pearl has become a liability. That night, Kino thinks that he hears noises in his hut. He grabs his knife and strikes out in the dark. The person scurries out. Juana tells Kino that the pearl is evil and will destroy them. She tells him to throw it away or break it, for it will destroy them. Kino says that the pearl is their one chance, and that the next morning they will sell the pearl.