"Now, here, take this ten dollars and buy yourself some blue suede shoes."
The boy's dirty face represents the lack of support he has because it shows that no one cares that his face is dirty.
The blue suede shoes represent Mrs. Luella Bates Washington Jones kindness after she gives him the money to buy them. This also symbolizes her empathy and she relates to not being able to have everything that you want.
Her purse symbolizes that she feels unsafe. This is because she carries around all her stuff all the time because she does not know what would happen to it if she did not.