Why has tita lost interest in life?

After this visit by the army, Chencha and Tita prepare northern-style chorizo because of its good taste and ability to stay preserved for a long time. Mama Elena sends the ranch manager’s son Felipe to find out if Pedro and Rosaura are safe in San Antonio, Texas. No one has heard from them since their departure. Tita worries about how the two are feeding Roberto without her breast milk. Her anxieties keep her from sleep for an entire month. All she is able to do is continue sewing her bedspread.