The auther uses those details to paint a picture in your mind of what is going on in Madame Loisels life its saying that she is not really poor but also not really rich but she wants to be rich
The effectiveness of this piece of art demonstrates the worth of ordinary life by portraying a normal day of a girl sitting in a blue armchair, lying down with her dog in a second airmchair to her left. This painting shapes the naturality of the children which is the signature of the painter and a demosntration of fine art with something common in a child's life