Will the pearl destroy the family?

In the end of chapter 3 I believe that the pearl could over time destroy the family. The reason for this is because at first when they found the pearl of the world things were getting better. For example the baby's swelling started to go down. Also, the doctor then said that he would help them after Kino found the pearl. In the end of chapter 3 things started to get bad. Things happened that could destroy the family. Kino was trying to hide the pearl by putting in under his bed. Someone went in his house with a knife and Kino ended with blood dripping down his face. So, I believe that this problem could over time destroy the family.