Uncles back story in the novel with Jays mom

In the novel, theres a bit more info about the uncle .
"when i first went to that house and got beaten up and kicked out, only one person acknolwedged me as the old mans son.it's jays mother. She helped me. Well... I didnt understand at that time. The people I thought as family looked at me like an insect, so why she, a complete stranger, help me?"

Jays mother was such a scary person. I was very surprised by her at first.

With her help, i was able to payoff my debt and open a small bar. So half of this store is Jays."