What valuable lessons did Roger learn from Mrs. Luella Bates Washington Jones?

Roger learns that
kindness can be far more effective than either discipline or punishment. Mrs. Luella Bates
Washington Jones could certainly have turned Roger in to the police or punished him in some
other way, but, instead, she seems more interested in whatever hardships have, perhaps, caused
him to feel that he must steal from others. She ascertains that there's no one at home to tell
him to wash his face, no one to make sure he's had his dinner, and no one to teach him right
from wrong or care for him. As a result of this knowledge, she tells him to wash his face and
she feeds him a wholesome dinner. She shares what she has with him rather than punishing him,
and she even assures him that she knows how he feels because she's been there too. Mrs. Jones
tells him,

"Well, you didn't have to snatch
my pocketbook to get some suede shoes [...]. You could of asked
me."

And then she precedes to give him the money
for the shoes he wants. He probably learns a great deal more from her kindness...