"The babies, Lupe and Pape , a girl and a boy, were dark- eyed cherubs."It means that they have black hair , and dark -eyed cherubs. The phrase dark- eyed cherubs means that that they are cute. She said that because they forget about the babies.
"Esperanza was a six year old and loved to walk with her papa through the winding rows , gazing up at him and watching his eyes dance with love for the land."It means that her and papa are walking in rows and she is looking in his eyes. And they are dancing because he liked walking with her. He also loves the land that they have.
"Delicate and frail, with big brown eyes, long braids, and skinny legs like a young deer" It means like when they saw someone she had big brown eyes , long braids, and skinny legs. And the phrase "like a young deer'' means like a new born deer. They are talking about how she looks like.