symbolism for Spinners

The book that I am reading right now is Spinners by Donna Jo Napoli & Richard Tchen. The symbol that is in the book is a spinning wheel. I believe that because both the characters in the book sacrifaced something in order to spin for their loved ones.
For the first character, a tailor, he was very much in love with a young woman. They both thought that they were meant to be together forever. The tailor wants to marry the woman. However, the young woman's father wanted his daughter to marry a miller who was twice the age of the woman because the tailor was too poor for the father's standards. The tailor insisted that the father let the tailor and his "darling" get marry. The father finally proposes a plan. The tailor was to make a gold dress for his daughter before the next full moon. The tailor was frantic because he doesn't have enough money to buy golden threads. So he settled for spinning straw. He hoped that the straw will turn into gold. When he finally spinned a golden dress from straw, he was crippled because of sewing nonstop all the time and not sleeping. When the young woman saw what the tailor had become, she rejected him and married the miller. So the spinner sacrifaced his leg and his profession for his beloved... and lost her.
For the second character, Saskia, the tailor's daughter (because the young woman from before was pregnant with the child from the tailor when she married the miller) was living with the miller. The miller, because Saskia and her friend shaved his hair, was ashamed and would never go outside. He stopped milling grains from people and is losing money fast. Saskia and the miller became poor and Saskia decides to spin in order to live. So she learned how to spin and to sell her wares in the market. I believe that she will sacriface something in order to spin and to feed her family (the miller). Just like the tailor, I believe that she will lose her "father', the miller and will eventually meet her real father, the crippled tailor.
That is why I believe that the spinning wheel is the symbol for this book.