the weight of silence

I read that antonias calli's mom fell down the stairs when she was pregnant. but she didn't fall, calli's dad griff, pushed her down the stairs. Calli was crying. after griff out Antonia on the couch, he went over to calli and wispered in her ear if you dont stop talking the baby will die and it will be your falt, or something along the lines of that. that is why calli stops talking. i read that antonia's mom died of breast cancer. i can conect that to my life because my grandmother died of breast cancer.