"The babies, Lupe and Pepe, a girl and a boy, were dark eyed cherubs, with of mops of black hair."The babies have faces that are as adorable as angels. They have angelic qualities.
"Then, like a caterpillar, she slowly inched next to him." This simile is comparing the girl's movements to the movements of a caterpillar. She is moving towards her like a caterpillar would.
"For the thousandth time, she wiped the tears slipping down her face."This quote tells us that Esperanza has been crying a lot. White she has not literally cried a thousand times, she has had lot of upsetting things happen to her. She has been through a lot in a short a amount of time.