She takes care of the family by cooking for her husband and child. Lastly, Juana is also seen as a voice of reason when she sticks by Kino throughout appearing caring and protective. This action makes us conclude that Juana is indeed a reasonable person. She is content with the little they have unlike Kino who is blinded by greed. She tried to throw the pearl away in a desperate bid to save her family. She collects the pearl and hands it back to Kino after he is attacked. Juana is so considerate since she remains reasonably level-headed even after Kino attacks her. Kino strikes her face with a clenched fist and kicks her on the side. Moreover, she takes a bold step of trying to throw the pearl away. Juana is surely the strength of Kino’s family.
Had Kino listened to her, maybe, just maybe they would still have their hut and canoe intact and their son Coyotito would still be alive. After this attack, Juana reiterates her earlier sentiments that the pearl is evil and that they ought to destroy it or throw it back into the sea before it destroys them together with their son. Then, after they failed to sell the pearl, someone lurking outside Kino's hut at night injures Kino badly when he slashes him and leaves him with a deep cut running from ear to chin.
Juana says that the pearl is evil and that they should get rid of it. A thief tries to steal the pearl and Kino fights him while trying to protect it. Juana is wise enough to see the potentially harmful nature of the pearl.