Why did Juana want to throw away the Pearl? Do you think she was right?

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.