What is Elena's greatest personal concern on this day?

Also question is, what are the main conflicts that Elena faces in the story?

The main conflict in the story is that Elena wants to fit in and not she just not able to. The reasons being are that even at home she not able to feel accepted because her parents are barely at home. The girls that her school makes her feel unwanted.

Subsequently, question is, what does Elena enjoy looking at from her window? Elena likes looking at the yard and the kitchen because they represent peace, family, and having one's own space to call home--unlike an apartment. She would like to have a kitchen table or yard so she can sit and read in a comfortable place rather than the fire escape of a big, ugly building.

Then, what do you think is the real reason that Eugene mother turns Elena away?

tenement in New Jersey and becomes friends with a southern white boy by the name of Eugene. She is turned away by Eugene's mother because Elena is Puerto Rican and not a southern white.

What does Elena learn in American history?

The personal lesson that Elena learned is that there are different levels of outsiders, and she would be considered beneath Eugene by his own family. For Elena, a personal heartbreak converges with a national crisis. She feels like an outsider, not an American. When she meets Eugene, she sees her chance at happiness.