"We are like the phoenix," said Abuelita. "Rising again, with a new life ahead of us." Page 50. This quote means that the family will never fall apart even during hard times.
Would she ever escape this valley she was living in? This valley of Mama being sick? Page 160. This quote means will Mama ever be healthy again and be her normal happy self?
"You were right Esperanza. In Mexico we stand on different sides of the river." Page 37. This quote means that Esperanza and Miguel stand on two different sides of the social pyramid and can't interact. Miguel can't be interact with the rich category, which Esperanza is in, and Esperanza can't interact with the servant category, which Miguel is in.