what does the text say about the lower middle class society?

Lower middle class society does not suit Amanda well. She is caught up in the illusion of her genteel old Southern upbringing, which has taught her that a man will support a woman and that there are certain foolproof rules for snagging one. Her experience, however, proves this to the contrary - specifically, when her husband runs out on the family and leaves her to fend for herself, and later when Laura's shyness prevents her from normal socialization. Still, Amanda never stops believing that a gentleman will soon call upon her and make everything right. At the same time, she inflicts these illusions and reality on her children - insisting that if Tom finds a husband for Laura, it will take care of all their problems. The idea that Tom can solve all their problems with a replacement is itself an illusion, one that's quickly eradicated by reality once he brings home a caller for Laura.