How does the author use foreshadowing in Blood Wedding?

In Act II, Scene II, The mother's constant reminders of her family's death begin to foreshadow something terrible. Even the father admits that Leonardo is trouble. The disappearances of Leonardo and the bride at the same time make the reader wonder if the two people are intentionally sneaking off together. The bride is pushing her groom's physical advances away. The marriage to her groom is losing strength to her desire to be with Leonardo. By the time the bride tells the maidens that it is a hard hour for her, the reader anticipates that she will run off with Leonardo.